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This is a searchable collection of scientific photos, illustrations, and videos. The images and videos in this gallery are licensed under Creative Commons Attribution Non-Commercial ShareAlike 3.0. This license lets you remix, tweak, and build upon this work non-commercially, as long as you credit and license your new creations under identical terms.
2727: Proteins related to myotonic dystrophy
2727: Proteins related to myotonic dystrophy
Myotonic dystrophy is thought to be caused by the binding of a protein called Mbnl1 to abnormal RNA repeats. In these two images of the same muscle precursor cell, the top image shows the location of the Mbnl1 splicing factor (green) and the bottom image shows the location of RNA repeats (red) inside the cell nucleus (blue). The white arrows point to two large foci in the cell nucleus where Mbnl1 is sequestered with RNA.
Manuel Ares, University of California, Santa Cruz
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6790: Cell division and cell death
6790: Cell division and cell death
Two cells over a 2-hour period. The one on the bottom left goes through programmed cell death, also known as apoptosis. The one on the top right goes through cell division, also called mitosis. This video was captured using a confocal microscope.
Dylan T. Burnette, Vanderbilt University School of Medicine.
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3440: Transcription factor Sox17 controls embryonic development of certain internal organs
3440: Transcription factor Sox17 controls embryonic development of certain internal organs
During embryonic development, transcription factors (proteins that regulate gene expression) govern the differentiation of cells into separate tissues and organs. Researchers at Cincinnati Children's Hospital Medical Center used mice to study the development of certain internal organs, including the liver, pancreas, duodenum (beginning part of the small intestine), gall bladder and bile ducts. They discovered that transcription factor Sox17 guides some cells to develop into liver cells and others to become part of the pancreas or biliary system (gall bladder, bile ducts and associated structures). The separation of these two distinct cell types (liver versus pancreas/biliary system) is complete by embryonic day 8.5 in mice. The transcription factors PDX1 and Hes1 are also known to be involved in embryonic development of the pancreas and biliary system. This image shows mouse cells at embryonic day 10.5. The green areas show cells that will develop into the pancreas and/or duodenum(PDX1 is labeled green). The blue area near the bottom will become the gall bladder and the connecting tubes (common duct and cystic duct) that attach the gall bladder to the liver and pancreas (Sox17 is labeled blue). The transcription factor Hes1 is labeled red. The image was not published. A similar image (different plane of the section) was published in: Sox17 Regulates Organ Lineage Segregation of Ventral Foregut Progenitor Cells Jason R. Spence, Alex W. Lange, Suh-Chin J. Lin, Klaus H. Kaestner, Andrew M. Lowy, Injune Kim, Jeffrey A. Whitsett and James M. Wells, Developmental Cell, Volume 17, Issue 1, 62-74, 21 July 2009. doi:10.1016/j.devcel.2009.05.012
James M. Wells, Cincinnati Children's Hospital Medical Center
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3432: Mouse mammary cells lacking anti-cancer protein
3432: Mouse mammary cells lacking anti-cancer protein
Shortly after a pregnant woman gives birth, her breasts start to secrete milk. This process is triggered by hormonal and genetic cues, including the protein Elf5. Scientists discovered that Elf5 also has another job--it staves off cancer. Early in the development of breast cancer, human breast cells often lose Elf5 proteins. Cells without Elf5 change shape and spread readily--properties associated with metastasis. This image shows cells in the mouse mammary gland that are lacking Elf5, leading to the overproduction of other proteins (red) that increase the likelihood of metastasis.
Nature Cell Biology, November 2012, Volume 14 No 11 pp1113-1231
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1101: Red blood cells
1101: Red blood cells
This image of human red blood cells was obtained with the help of a scanning electron microscope, an instrument that uses a finely focused electron beam to yield detailed images of the surface of a sample.
Tina Weatherby Carvalho, University of Hawaii at Manoa
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2423: Protein map
2423: Protein map
Network diagram showing a map of protein-protein interactions in a yeast (Saccharomyces cerevisiae) cell. This cluster includes 78 percent of the proteins in the yeast proteome. The color of a node represents the phenotypic effect of removing the corresponding protein (red, lethal; green, nonlethal; orange, slow growth; yellow, unknown).
Hawoong Jeong, KAIST, Korea
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1286: Animal cell membrane
1286: Animal cell membrane
The membrane that surrounds a cell is made up of proteins and lipids. Depending on the membrane's location and role in the body, lipids can make up anywhere from 20 to 80 percent of the membrane, with the remainder being proteins. Cholesterol (green), which is not found in plant cells, is a type of lipid that helps stiffen the membrane.
Judith Stoffer
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3742: Confocal microscopy of perineuronal nets in the brain 2
3742: Confocal microscopy of perineuronal nets in the brain 2
The photo shows a confocal microscopy image of perineuronal nets (PNNs), which are specialized extracellular matrix (ECM) structures in the brain. The PNN surrounds some nerve cells in brain regions including the cortex, hippocampus and thalamus. Researchers study the PNN to investigate their involvement stabilizing the extracellular environment and forming nets around nerve cells and synapses in the brain. Abnormalities in the PNNs have been linked to a variety of disorders, including epilepsy and schizophrenia, and they limit a process called neural plasticity in which new nerve connections are formed. To visualize the PNNs, researchers labeled them with Wisteria floribunda agglutinin (WFA)-fluorescein. Related to image 3741.
Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR)
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2324: Movements of myosin
2324: Movements of myosin
Inside the fertilized egg cell of a fruit fly, we see a type of myosin (related to the protein that helps muscles contract) made to glow by attaching a fluorescent protein. After fertilization, the myosin proteins are distributed relatively evenly near the surface of the embryo. The proteins temporarily vanish each time the cells' nuclei--initially buried deep in the cytoplasm--divide. When the multiplying nuclei move to the surface, they shift the myosin, producing darkened holes. The glowing myosin proteins then gather, contract, and start separating the nuclei into their own compartments.
Victoria Foe, University of Washington
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1285: Lipid raft
1285: Lipid raft
Researchers have learned much of what they know about membranes by constructing artificial membranes in the laboratory. In artificial membranes, different lipids separate from each other based on their physical properties, forming small islands called lipid rafts.
Judith Stoffer
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1274: Animal cell
1274: Animal cell
A typical animal cell, sliced open to reveal a cross-section of organelles.
Judith Stoffer
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3557: Bioluminescent imaging in adult zebrafish - overhead view
3557: Bioluminescent imaging in adult zebrafish - overhead view
Luciferase-based imaging enables visualization and quantification of internal organs and transplanted cells in live adult zebrafish. In this image, a cardiac muscle-restricted promoter drives firefly luciferase expression.
For imagery of both the lateral and overhead view go to 3556.
For imagery of the lateral view go to 3558.
For more information about the illumated area go to 3559.
For imagery of both the lateral and overhead view go to 3556.
For imagery of the lateral view go to 3558.
For more information about the illumated area go to 3559.
Kenneth Poss, Duke University
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5777: Microsporidia in roundworm 1
5777: Microsporidia in roundworm 1
Many disease-causing microbes manipulate their host’s metabolism and cells for their own ends. Microsporidia—which are parasites closely related to fungi—infect and multiply inside animal cells, and take the rearranging of cells’ interiors to a new level. They reprogram animal cells such that the cells start to fuse, causing them to form long, continuous tubes. As shown in this image of the roundworm Caenorhabditis elegans, microsporidia (shown in magenta) have invaded the worm’s gut cells (shown in yellow; the cells’ nuclei are shown in blue) and have instructed the cells to merge. The cell fusion enables the microsporidia to thrive and propagate in the expanded space. Scientists study microsporidia in worms to gain more insight into how these parasites manipulate their host cells. This knowledge might help researchers devise strategies to prevent or treat infections with microsporidia. For more on the research into microsporidia, see this news release from the University of California San Diego. Related to images 5778 and 5779.
Keir Balla and Emily Troemel, University of California San Diego
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2425: Influenza virus attaches to host membrane
2425: Influenza virus attaches to host membrane
Influenza A infects a host cell when hemagglutinin grips onto glycans on its surface. Neuraminidase, an enzyme that chews sugars, helps newly made virus particles detach so they can infect other cells. Related to 213. Featured in the March 2006, issue of Findings in "Viral Voyages."
Crabtree + Company
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5771: Lysosome clusters around amyloid plaques
5771: Lysosome clusters around amyloid plaques
It's probably most people's least favorite activity, but we still need to do it--take out our trash. Otherwise our homes will get cluttered and smelly, and eventually, we'll get sick. The same is true for our cells: garbage disposal is an ongoing and essential activity, and our cells have a dedicated waste-management system that helps keep them clean and neat. One major waste-removal agent in the cell is the lysosome. Lysosomes are small structures, called organelles, and help the body to dispose of proteins and other molecules that have become damaged or worn out.
This image shows a massive accumulation of lysosomes (visualized with LAMP1 immunofluorescence, in purple) within nerve cells that surround amyloid plaques (visualized with beta-amyloid immunofluorescence, in light blue) in a mouse model of Alzheimer's disease. Scientists have linked accumulation of lysosomes around amyloid plaques to impaired waste disposal in nerve cells, ultimately resulting in cell death.
This image shows a massive accumulation of lysosomes (visualized with LAMP1 immunofluorescence, in purple) within nerve cells that surround amyloid plaques (visualized with beta-amyloid immunofluorescence, in light blue) in a mouse model of Alzheimer's disease. Scientists have linked accumulation of lysosomes around amyloid plaques to impaired waste disposal in nerve cells, ultimately resulting in cell death.
Swetha Gowrishankar and Shawn Ferguson, Yale School of Medicine
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2454: Seeing signaling protein activation in cells 04
2454: Seeing signaling protein activation in cells 04
Cdc42, a member of the Rho family of small guanosine triphosphatase (GTPase) proteins, regulates multiple cell functions, including motility, proliferation, apoptosis, and cell morphology. In order to fulfill these diverse roles, the timing and location of Cdc42 activation must be tightly controlled. Klaus Hahn and his research group use special dyes designed to report protein conformational changes and interactions, here in living neutrophil cells. Warmer colors in this image indicate higher levels of activation. Cdc42 looks to be activated at cell protrusions.
Related to images 2451, 2452, and 2453.
Related to images 2451, 2452, and 2453.
Klaus Hahn, University of North Carolina, Chapel Hill Medical School
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5887: Plasma-Derived Membrane Vesicles
5887: Plasma-Derived Membrane Vesicles
This fiery image doesn’t come from inside a bubbling volcano. Instead, it shows animal cells caught in the act of making bubbles, or blebbing. Some cells regularly pinch off parts of their membranes to produce bubbles filled with a mix of proteins and fats. The bubbles (red) are called plasma-derived membrane vesicles, or PMVs, and can travel to other parts of the body where they may aid in cell-cell communication. The University of Texas, Austin, researchers responsible for this photo are exploring ways to use PMVs to deliver medicines to precise locations in the body.
This image, entered in the Biophysical Society’s 2017 Art of Science Image contest, used two-channel spinning disk confocal fluorescence microscopy. It was also featured in the NIH Director’s Blog in May 2017.
This image, entered in the Biophysical Society’s 2017 Art of Science Image contest, used two-channel spinning disk confocal fluorescence microscopy. It was also featured in the NIH Director’s Blog in May 2017.
Jeanne Stachowiak, University of Texas at Austin
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2809: Vimentin in a quail embryo
2809: Vimentin in a quail embryo
Video of high-resolution confocal images depicting vimentin immunofluorescence (green) and nuclei (blue) at the edge of a quail embryo yolk. These images were obtained as part of a study to understand cell migration in embryos. An NIGMS grant to Professor Garcia was used to purchase the confocal microscope that collected these images. Related to images 2807 and 2808.
Andrés Garcia, Georgia Tech
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3488: Shiga toxin being sorted inside a cell
3488: Shiga toxin being sorted inside a cell
Shiga toxin (green) is sorted from the endosome into membrane tubules (red), which then pinch off and move to the Golgi apparatus.
Somshuvra Mukhopadhyay, The University of Texas at Austin, and Adam D. Linstedt, Carnegie Mellon University
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1338: Nerve cell
1338: Nerve cell
Nerve cells have long, invisibly thin fibers that carry electrical impulses throughout the body. Some of these fibers extend about 3 feet from the spinal cord to the toes.
Judith Stoffer
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6795: Dividing yeast cells with nuclear envelopes and spindle pole bodies
6795: Dividing yeast cells with nuclear envelopes and spindle pole bodies
Time-lapse video of yeast cells undergoing cell division. Nuclear envelopes are shown in green, and spindle pole bodies, which help pull apart copied genetic information, are shown in magenta. This video was captured using wide-field microscopy with deconvolution.
Related to images 6791, 6792, 6793, 6794, 6797, 6798, and video 6796.
Related to images 6791, 6792, 6793, 6794, 6797, 6798, and video 6796.
Alaina Willet, Kathy Gould’s lab, Vanderbilt University.
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1331: Mitosis - prometaphase
1331: Mitosis - prometaphase
A cell in prometaphase during mitosis: The nuclear membrane breaks apart, and the spindle starts to interact with the chromosomes. Mitosis is responsible for growth and development, as well as for replacing injured or worn out cells throughout the body. For simplicity, mitosis is illustrated here with only six chromosomes.
Judith Stoffer
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2636: Computer model of cell membrane
2636: Computer model of cell membrane
A computer model of the cell membrane, where the plasma membrane is red, endoplasmic reticulum is yellow, and mitochondria are blue. This image relates to a July 27, 2009 article in Computing Life.
Bridget Wilson, University of New Mexico
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3735: Scanning electron microscopy of collagen fibers
3735: Scanning electron microscopy of collagen fibers
This image shows collagen, a fibrous protein that's the main component of the extracellular matrix (ECM). Collagen is a strong, ropelike molecule that forms stretch-resistant fibers. The most abundant protein in our bodies, collagen accounts for about a quarter of our total protein mass. Among its many functions is giving strength to our tendons, ligaments and bones and providing scaffolding for skin wounds to heal. There are about 20 different types of collagen in our bodies, each adapted to the needs of specific tissues.
Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR)
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1316: Mitosis - interphase
1316: Mitosis - interphase
A cell in interphase, at the start of mitosis: Chromosomes duplicate, and the copies remain attached to each other. Mitosis is responsible for growth and development, as well as for replacing injured or worn out cells throughout the body. For simplicity, mitosis is illustrated here with only six chromosomes.
Judith Stoffer
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3626: Bone cancer cell
3626: Bone cancer cell
This image shows an osteosarcoma cell with DNA in blue, energy factories (mitochondria) in yellow, and actin filaments—part of the cellular skeleton—in purple. One of the few cancers that originate in the bones, osteosarcoma is rare, with about a thousand new cases diagnosed each year in the United States.
This image was part of the Life: Magnified exhibit that ran from June 3, 2014, to January 21, 2015, at Dulles International Airport.
This image was part of the Life: Magnified exhibit that ran from June 3, 2014, to January 21, 2015, at Dulles International Airport.
Dylan Burnette and Jennifer Lippincott-Schwartz, NICHD
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6902: Arachnoidiscus diatom
6902: Arachnoidiscus diatom
An Arachnoidiscus diatom with a diameter of 190µm. Diatoms are microscopic algae that have cell walls made of silica, which is the strongest known biological material relative to its density. In Arachnoidiscus, the cell wall is a radially symmetric pillbox-like shell composed of overlapping halves that contain intricate and delicate patterns. Sometimes, Arachnoidiscus is called “a wheel of glass.”
This image was taken with the orientation-independent differential interference contrast microscope.
This image was taken with the orientation-independent differential interference contrast microscope.
Michael Shribak, Marine Biological Laboratory/University of Chicago.
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6805: Staphylococcus aureus aggregating upon contact with synovial fluid
6805: Staphylococcus aureus aggregating upon contact with synovial fluid
Staphylococcus aureus bacteria (green) grouping together upon contact with synovial fluid—a viscous substance found in joints. The formation of groups can help protect the bacteria from immune system defenses and from antibiotics, increasing the likelihood of an infection. This video is a 1-hour time lapse and was captured using a confocal laser scanning microscope.
More information about the research that produced this video can be found in the Journal of Bacteriology paper "In Vitro Staphylococcal Aggregate Morphology and Protection from Antibiotics Are Dependent on Distinct Mechanisms Arising from Postsurgical Joint Components and Fluid Motion" by Staats et al.
Related to images 6803 and 6804.
More information about the research that produced this video can be found in the Journal of Bacteriology paper "In Vitro Staphylococcal Aggregate Morphology and Protection from Antibiotics Are Dependent on Distinct Mechanisms Arising from Postsurgical Joint Components and Fluid Motion" by Staats et al.
Related to images 6803 and 6804.
Paul Stoodley, The Ohio State University.
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2536: G switch
2536: G switch
The G switch allows our bodies to respond rapidly to hormones. See images 2537 and 2538 for labeled versions of this image. Featured in Medicines By Design.
Crabtree + Company
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3273: Heart muscle with reprogrammed skin cells
3273: Heart muscle with reprogrammed skin cells
Skins cells were reprogrammed into heart muscle cells. The cells highlighted in green are remaining skin cells. Red indicates a protein that is unique to heart muscle. The technique used to reprogram the skin cells into heart cells could one day be used to mend heart muscle damaged by disease or heart attack. Image and caption information courtesy of the California Institute for Regenerative Medicine.
Deepak Srivastava, Gladstone Institute of Cardiovascular Disease, via CIRM
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6352: CRISPR surveillance complex
6352: CRISPR surveillance complex
This image shows how the CRISPR surveillance complex is disabled by two copies of anti-CRISPR protein AcrF1 (red) and one AcrF2 (light green). These anti-CRISPRs block access to the CRISPR RNA (green tube) preventing the surveillance complex from scanning and targeting invading viral DNA for destruction.
NRAMM National Resource for Automated Molecular Microscopy http://nramm.nysbc.org/nramm-images/ Source: Bridget Carragher
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5811: NCMIR Tongue 2
5811: NCMIR Tongue 2
Microscopy image of a tongue. One in a series of two, see image 5810
National Center for Microscopy and Imaging Research (NCMIR)
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6750: C. elegans with blue and yellow lights in the background
6750: C. elegans with blue and yellow lights in the background
These microscopic roundworms, called Caenorhabditis elegans, lack eyes and the opsin proteins used by visual systems to detect colors. However, researchers found that the worms can still sense the color of light in a way that enables them to avoid pigmented toxins made by bacteria. This image was captured using a stereo microscope.
H. Robert Horvitz and Dipon Ghosh, Massachusetts Institute of Technology.
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3272: Ear hair cells derived from embryonic stem cells
3272: Ear hair cells derived from embryonic stem cells
Mouse embryonic stem cells matured into this bundle of hair cells similar to the ones that transmit sound in the ear. These cells could one day be transplanted as a therapy for some forms of deafness, or they could be used to screen drugs to treat deafness. The hairs are shown at 23,000 times magnification via scanning electron microscopy. Image and caption information courtesy of the California Institute for Regenerative Medicine.
Stefen Heller, Stanford University, via CIRM
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6773: Endoplasmic reticulum abnormalities
6773: Endoplasmic reticulum abnormalities
Human cells with the gene that codes for the protein FIT2 deleted. Green indicates an endoplasmic reticulum (ER) resident protein. The lack of FIT2 affected the structure of the ER and caused the resident protein to cluster in ER membrane aggregates, seen as large, bright-green spots. Red shows where the degradation of cell parts—called autophagy—is taking place, and the nucleus is visible in blue. This image was captured using a confocal microscope.
Michel Becuwe, Harvard University.
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5825: A Growing Bacterial Biofilm
5825: A Growing Bacterial Biofilm
A growing Vibrio cholerae (cholera) biofilm. Cholera bacteria form colonies called biofilms that enable them to resist antibiotic therapy within the body and other challenges to their growth.
Each slightly curved comma shape represents an individual bacterium from assembled confocal microscopy images. Different colors show each bacterium’s position in the biofilm in relation to the surface on which the film is growing.
Each slightly curved comma shape represents an individual bacterium from assembled confocal microscopy images. Different colors show each bacterium’s position in the biofilm in relation to the surface on which the film is growing.
Jing Yan, Ph.D., and Bonnie Bassler, Ph.D., Department of Molecular Biology, Princeton University, Princeton, NJ.
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3613: Abnormal, spiky fibroblast
3613: Abnormal, spiky fibroblast
This is a fibroblast, a connective tissue cell that plays an important role in wound healing. Normal fibroblasts have smooth edges. In contrast, this spiky cell is missing a protein that is necessary for proper construction of the cell's skeleton. Its jagged shape makes it impossible for the cell to move normally. In addition to compromising wound healing, abnormal cell movement can lead to birth defects, faulty immune function, and other health problems.
This image was part of the Life: Magnified exhibit that ran from June 3, 2014, to January 21, 2015, at Dulles International Airport.
This image was part of the Life: Magnified exhibit that ran from June 3, 2014, to January 21, 2015, at Dulles International Airport.
Praveen Suraneni, Stowers Institute for Medical Research, Kansas City, Mo.
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3737: A bundle of myelinated peripheral nerve cells (axons)
3737: A bundle of myelinated peripheral nerve cells (axons)
The extracellular matrix (ECM) is most prevalent in connective tissues but also is present between the stems (axons) of nerve cells. The axons of nerve cells are surrounded by the ECM encasing myelin-supplying Schwann cells, which insulate the axons to help speed the transmission of electric nerve impulses along the axons.
Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR)
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6792: Yeast cells with nuclei and contractile rings
6792: Yeast cells with nuclei and contractile rings
Yeast cells with nuclei shown in green and contractile rings shown in magenta. Nuclei store DNA, and contractile rings help cells divide. This image was captured using wide-field microscopy with deconvolution.
Related to images 6791, 6793, 6794, 6797, 6798, and videos 6795 and 6796.
Related to images 6791, 6793, 6794, 6797, 6798, and videos 6795 and 6796.
Alaina Willet, Kathy Gould’s lab, Vanderbilt University.
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6964: Crawling cell
6964: Crawling cell
A crawling cell with DNA shown in blue and actin filaments, which are a major component of the cytoskeleton, visible in pink. Actin filaments help enable cells to crawl. This image was captured using structured illumination microscopy.
Dylan T. Burnette, Vanderbilt University School of Medicine.
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2523: Plasma membrane
2523: Plasma membrane
The plasma membrane is a cell's protective barrier. See image 2524 for a labeled version of this illustration. Featured in The Chemistry of Health.
Crabtree + Company
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2315: Fly cells live
2315: Fly cells live
If a picture is worth a thousand words, what's a movie worth? For researchers studying cell migration, a "documentary" of fruit fly cells (bright green) traversing an egg chamber could answer longstanding questions about cell movement. Historically, researchers have been unable to watch this cell migration unfold in living ovarian tissue in real time. But by developing a culture medium that allows fly eggs to survive outside their ovarian homes, scientists can observe the nuances of cell migration as it happens. Such details may shed light on how immune cells move to a wound and why cancer cells spread to other sites. See 3594 for still image.
Denise Montell, Johns Hopkins University School of Medicine
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6968: Regenerating lizard tail
6968: Regenerating lizard tail
The interior of a regenerating lizard tail 14 days after the original tail was amputated. Cell nuclei (blue), proliferating cells (green), cartilage (red), and muscle (white) have been visualized with immunofluorescence staining.
Thomas Lozito, University of Southern California.
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6607: Cryo-ET cell cross-section visualizing insulin vesicles
6607: Cryo-ET cell cross-section visualizing insulin vesicles
On the left, a cross-section slice of a rat pancreas cell captured using cryo-electron tomography (cryo-ET). On the right, a color-coded, 3D version of the image highlighting cell structures. Visible features include insulin vesicles (purple rings), insulin crystals (gray circles), microtubules (green rods), ribosomes (small yellow circles). The black line at the bottom right of the left image represents 200 nm. Related to image 6608.
Xianjun Zhang, University of Southern California.
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2608: Human embryonic stem cells
2608: Human embryonic stem cells
The center cluster of cells, colored blue, shows a colony of human embryonic stem cells. These cells, which arise at the earliest stages of development, are capable of differentiating into any of the 220 types of cells in the human body and can provide access to cells for basic research and potential therapies. This image is from the lab of the University of Wisconsin-Madison's James Thomson.
James Thomson, University of Wisconsin-Madison
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1013: Lily mitosis 03
1013: Lily mitosis 03
A light microscope image of a cell from the endosperm of an African globe lily (Scadoxus katherinae). This is one frame of a time-lapse sequence that shows cell division in action. The lily is considered a good organism for studying cell division because its chromosomes are much thicker and easier to see than human ones. Staining shows microtubules in red and chromosomes in blue.
Related to images 1010, 1011, 1012, 1014, 1015, 1016, 1017, 1018, 1019, and 1021.
Related to images 1010, 1011, 1012, 1014, 1015, 1016, 1017, 1018, 1019, and 1021.
Andrew S. Bajer, University of Oregon, Eugene
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1311: Housekeeping cell illustration
1335: Telomerase illustration
1335: Telomerase illustration
Reactivating telomerase in our cells does not appear to be a good way to extend the human lifespan. Cancer cells reactivate telomerase.
Judith Stoffer
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2456: Z rings in bacterial division
2456: Z rings in bacterial division
Lab-made liposomes contract where Z rings have gathered together and the constriction forces are greatest (arrows). The top picture shows a liposome, and the bottom picture shows fluorescence from Z rings (arrows) inside the same liposome simultaneously.
Masaki Osawa, Duke University
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2439: Hydra 03
2439: Hydra 03
Hydra magnipapillata is an invertebrate animal used as a model organism to study developmental questions, for example the formation of the body axis.
Hiroshi Shimizu, National Institute of Genetics in Mishima, Japan
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