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Cell in two stages of division
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This image shows a cell in two stages of division: prometaphase (top) and metaphase (bottom). Lilian Kabeche, Dartmouth View Media
Golgi theories
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Two models for how material passes through the Golgi apparatus: the vesicular shuttle model and the cisternae maturation model. Judith Stoffer View Media
Chromatin in human tenocyte
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The nucleus of a degenerating human tendon cell, also known as a tenocyte. It has been color-coded based on the density of chromatin—a substance made up of DNA and proteins. Melike Lakadamyali, Perelman School of Medicine at the University of Pennsylvania. View Media
Leptospira bacteria
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Leptospira, shown here in green, is a type (genus) of elongated, spiral-shaped bacteria. Infection can cause Weil's disease, a kind of jaundice, in humans. Tina Weatherby Carvalho, University of Hawaii at Manoa View Media
Biopixels
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Bioengineers were able to coax bacteria to blink in unison on microfluidic chips. This image shows a small chip with about 500 blinking bacterial colonies or biopixels. Jeff Hasty Lab, UC San Diego View Media
Glowing bacteria make a pretty postcard
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This tropical scene, reminiscent of a postcard from Key West, is actually a petri dish containing an artistic arrangement of genetically engineered bacteria. Nathan C. Shaner, The Scintillon Institute View Media
Fly cells live
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If a picture is worth a thousand words, what's a movie worth? Denise Montell, Johns Hopkins University School of Medicine View Media
Fruit fly spermatids
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Developing spermatids (precursors of mature sperm cells) begin as small, round cells and mature into long-tailed, tadpole-shaped ones. Lacramioara Fabian, The Hospital for Sick Children, Toronto, Canada View Media
Larvae from the parasitic worm that causes schistosomiasis
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The parasitic worm that causes schistosomiasis hatches in water and grows up in a freshwater snail, as shown here. Bo Wang and Phillip A. Newmark, University of Illinois at Urbana-Champaign, 2013 FASEB BioArt winner View Media
Active site of sulfite oxidase
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Sulfite oxidase is an enzyme that is essential for normal neurological development in children. John Enemark, University of Arizona View Media
Endoplasmic reticulum abnormalities 2
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Human cells with the gene that codes for the protein FIT2 deleted. After an experimental intervention, they are expressing a nonfunctional version of FIT2, shown in green. Michel Becuwe, Harvard University. View Media
H1N1 Influenza Virus
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CellPack image of the H1N1 influenza virus, with hemagglutinin and neuraminidase glycoproteins in green and red, respectively, on the outer envelope (white); matrix protein in gray, and ribonucleoprot Dr. Rommie Amaro, University of California, San Diego View Media
Pollen grains: male germ cells in plants and a cause of seasonal allergies
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Those of us who get sneezy and itchy-eyed every spring or fall may have pollen grains, like those shown here, to blame. Edna, Gil, and Amit Cukierman, Fox Chase Cancer Center, Philadelphia, Pa. View Media
Worm sperm
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To develop a system for studying cell motility in unnatrual conditions -- a microscope slide instead of the body -- Tom Roberts and Katsuya Shimabukuro at Florida State University disassembled and rec Tom Roberts, Florida State University View Media
Skin cross-section
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Cross-section of skin anatomy shows layers and different tissue types. National Institutes of Health Medical Arts View Media
Staphylococcus aureus aggregating upon contact with synovial fluid
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Staphylococcus aureus bacteria (green) grouping together upon contact with synovial fluid—a viscous substance found in joints. Paul Stoodley, The Ohio State University. View Media
Hydra 05
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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 View Media
Endoplasmic reticulum abnormalities
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Human cells with the gene that codes for the protein FIT2 deleted. Green indicates an endoplasmic reticulum (ER) resident protein. Michel Becuwe, Harvard University. View Media
HIV, the AIDS virus, infecting a human cell
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This human T cell (blue) is under attack by HIV (yellow), the virus that causes AIDS. Seth Pincus, Elizabeth Fischer, and Austin Athman, National Institute of Allergy and Infectious Diseases, National Institutes of Health View Media
Four timepoints in gastrulation
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It has been said that gastrulation is the most important event in a person's life. Bob Goldstein, University of North Carolina, Chapel Hill View Media
Chromatin in human fibroblast
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The nucleus of a human fibroblast cell with chromatin—a substance made up of DNA and proteins—shown in various colors. Melike Lakadamyali, Perelman School of Medicine at the University of Pennsylvania. View Media
Stretch detectors
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Muscles stretch and contract when we walk, and skin splits open and knits back together when we get a paper cut. Christopher Chen, University of Pennsylvania View Media
Human ES cells turn into insulin-producing cells
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Human embryonic stem cells were differentiated into cells like those found in the pancreas (blue), which give rise to insulin-producing cells (red). Eugene Brandon, ViaCyte, via CIRM View Media
HeLa cell undergoing division into two daughter cells
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Here, a human HeLa cell (a type of immortal cell line used in laboratory experiments) is undergoing cell division. Dylan T. Burnette, Ph.D., Vanderbilt University School of Medicine. View Media
Cryo-ET cross-section of the Golgi apparatus
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On the left, a cross-section slice of a rat pancreas cell captured using cryo-electron tomography (cryo-ET). On the right, a 3D, color-coded version of the image highlighting cell structures. Xianjun Zhang, University of Southern California. View Media
GFP sperm
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Fruit fly sperm cells glow bright green when they express the gene for green fluorescent protein (GFP). View Media
Cells keep their shape with actin filaments and microtubules
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This image shows a normal fibroblast, a type of cell that is common in connective tissue and frequently studied in research labs. James J. Faust and David G. Capco, Arizona State University View Media
Trajectories of labeled cell receptors
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Trajectories of single molecule labeled cell surface receptors. This is an example of NIH-supported research on single-cell analysis. Gaudenz Danuser, Harvard Medical School View Media
H1N1 Influenza Virus
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Related to image 6355. Dr. Rommie Amaro, University of California, San Diego View Media
Smooth muscle from mouse stem cells
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These smooth muscle cells were derived from mouse neural crest stem cells. Red indicates smooth muscle proteins, blue indicates nuclei. Deepak Srivastava, Gladstone Institutes, via CIRM View Media
Biosensors illustration
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A rendering of an activity biosensor image overlaid with a cell-centered frame of reference used for image analysis of signal transduction. Gaudenz Danuser, Harvard Medical School View Media
Painted chromosomes
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Like a paint-by-numbers picture, painted probes tint individual human chromosomes by targeting specific DNA sequences. Beth A. Sullivan, Duke University View Media
Circadian rhythm neurons in the fruit fly brain
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Some nerve cells (neurons) in the brain keep track of the daily cycle. This time-keeping mechanism, called the circadian clock, is found in all animals including us. Justin Blau, New York University View Media
Intasome
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Salk researchers captured the structure of a protein complex called an intasome (center) that lets viruses similar to HIV establish permanent infection in their hosts. National Resource for Automated Molecular Microscopy http://nramm.nysbc.org/nramm-images/ Source: Bridget Carragher View Media
Mouse Brain Cross Section
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The brain sections are treated with fluorescent antibodies specific to a particular protein and visualized using serial electron microscopy (SEM). Anton Maximov, The Scripps Research Institute, La Jolla, CA View Media
Arachnoidiscus diatom
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An Arachnoidiscus diatom with a diameter of 190µm. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media
Cell division phases in Xenopus frog cells
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These images show three stages of cell division in Xenopus XL177 cells, which are derived from tadpole epithelial cells. They are (from top): metaphase, anaphase and telophase. Claire Walczak, who took them while working as a postdoc in the laboratory of Timothy Mitchison View Media
Transmission electron microscopy of coronary artery wall with elastin-rich ECM pseudocolored in light brown
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Elastin is a fibrous protein in the extracellular matrix (ECM). It is abundant in artery walls like the one shown here. As its name indicates, elastin confers elasticity. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media
ARTS triggers apoptosis
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Cell showing overproduction of the ARTS protein (red). ARTS triggers apoptosis, as shown by the activation of caspase-3 (green) a key tool in the cell's destruction. The nucleus is shown in blue. Hermann Steller, Rockefeller University View Media
Cross section of a Drosophila melanogaster pupa lacking Draper
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In the absence of the engulfment receptor Draper, salivary gland cells (light blue) persist in the thorax of a developing Drosophila melanogaster pupa. Christina McPhee and Eric Baehrecke, University of Massachusetts Medical School View Media
Spreading Cells 01
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Cells move forward with lamellipodia and filopodia supported by networks and bundles of actin filaments. Proper, controlled cell movement is a complex process. Rong Li and Praveen Suraneni, Stowers Institute for Medical Research View Media
Worms and human infertility
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This montage of tiny, transparent C. elegans--or roundworms--may offer insight into understanding human infertility. Abby Dernburg, Lawrence Berkeley National Laboratory View Media
Math from the heart
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Watch a cell ripple toward a beam of light that turns on a movement-related protein. View Media
Three muscle fibers; the middle has a defect found in some neuromuscular diseases
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Of the three muscle fibers shown here, the one on the right and the one on the left are normal. The middle fiber is deficient a large protein called nebulin (blue). Christopher Pappas and Carol Gregorio, University of Arizona View Media
Bacteriophage P22 capsid
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Cryo-electron microscopy (cryo-EM) has the power to capture details of proteins and other small biological structures at the molecular level. This image shows proteins in the capsid, or outer co Dr. Wah Chiu, Baylor College of Medicine View Media
Wound healing in process
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Wound healing requires the action of stem cells. Hermann Steller, Rockefeller University View Media
Quorum-sensing inhibitor limits bacterial growth
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To simulate the consequences of disrupting bacterial cell-to-cell communication, called quorum sensing, in the crypts (small chambers within the colon), the researchers experimented with an inhibitor Minyoung Kevin Kim and Bonnie Bassler, Princeton University View Media
Three neurons and human ES cells
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The three neurons (red) visible in this image were derived from human embryonic stem cells. Undifferentiated stem cells are green here. Anirvan Ghosh lab, University of California, San Diego, via CIRM View Media
Cytonemes in developing fruit fly cells
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Scientists have long known that multicellular organisms use biological molecules produced by one cell and sensed by another to transmit messages that, for instance, guide proper development of organs Sougata Roy, University of California, San Francisco View Media
