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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.

Migrating pigment cells

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Pigment cells are cells that give skin its color. David Parichy, University of Washington View Media

Flu virus proteins during self-replication

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Influenza (flu) virus proteins in the act of self-replication. Viral nucleoprotein (blue) encapsidates [encapsulates] the RNA genome (green). Scripps Research Institute in La Jolla, CA View Media

Bacteriophage P22 capsid, detail

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Detail of a subunit of the capsid, or outer cover, of bacteriophage P22, a virus that infects the Salmonella bacteria. Dr. Wah Chiu, Baylor College of Medicine View Media

Cell-like compartments emerging from scrambled frog eggs 4

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Cell-like compartments that spontaneously emerged from scrambled frog eggs, with nuclei (blue) from frog sperm. Endoplasmic reticulum (red) and microtubules (green) are also visible. Xianrui Cheng, Stanford University School of Medicine. View Media

Dynein moving along microtubules

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Dynein (green) is a motor protein that “walks” along microtubules (red, part of the cytoskeleton) and carries its cargo along with it. This video was captured through fluorescence microscopy. Morgan DeSantis, University of Michigan. View Media

NCMIR Tongue 2

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Microscopy image of a tongue. One in a series of two, see image 5810 National Center for Microscopy and Imaging Research (NCMIR) View Media

Neural circuits in worms similar to those in humans

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Green and yellow fluorescence mark the processes and cell bodies of some C. elegans neurons. Shawn Xu, University of Michigan View Media

Lily mitosis 12

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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. Andrew S. Bajer, University of Oregon, Eugene View Media

Autofluorescent xanthophores in zebrafish skin

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Pigment cells are cells that give skin its color. David Parichy, University of Washington 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

Glowing glycans

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Sugars light up the cells in this jaw of a 3-day-old zebrafish embryo and highlight a scientific first: labeling and tracking the movements of sugar chains called glycans in a living organism. Carolyn Bertozzi, University of California, Berkeley View Media

Hungry, hungry macrophages

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Macrophages (green) are the professional eaters of our immune system. Meghan Morrissey, University of California, Santa Barbara. View Media

Fruit fly nurse cells transporting their contents during egg development

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In many animals, the egg cell develops alongside sister cells. Adam C. Martin, Massachusetts Institute of Technology. View Media

Cell-like compartments from frog eggs 2

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Cell-like compartments that spontaneously emerged from scrambled frog eggs, with nuclei (blue) from frog sperm. Endoplasmic reticulum (red) and microtubules (green) are also visible. Xianrui Cheng, Stanford University School of Medicine. View Media

Cryo-ET cell cross-section visualizing insulin vesicles

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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 color-coded, 3D version of the image highlighting cell structures. Xianjun Zhang, University of Southern California. View Media

Mouse brain slice showing nerve cells

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A 20-µm thick section of mouse midbrain. The nerve cells are transparent and weren’t stained. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

Bioluminescent imaging in adult zebrafish - lateral and overhead view

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Luciferase-based imaging enables visualization and quantification of internal organs and transplanted cells in live adult zebrafish. Kenneth Poss, Duke University View Media

Yeast cells with nuclear envelopes and tubulin

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Yeast cells with nuclear envelopes shown in magenta and tubulin shown in light blue. The nuclear envelope defines the borders of the nucleus, which houses DNA. Alaina Willet, Kathy Gould’s lab, Vanderbilt University. View Media

Mitosis - prometaphase

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A cell in prometaphase during mitosis: The nuclear membrane breaks apart, and the spindle starts to interact with the chromosomes. Judith Stoffer 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

TEM cross-section of C. elegans (roundworm)

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The worm Caenorhabditis elegans is a popular laboratory animal because its small size and fairly simple body make it easy to study. Piali Sengupta, Brandeis University View Media

Human skeletal muscle

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Cross section of human skeletal muscle. Image taken with a confocal fluorescent light microscope. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media

Lily mitosis 07

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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. Andrew S. Bajer, University of Oregon, Eugene View Media

Motion in the brain

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Amid a network of blood vessels and star-shaped support cells, neurons in the brain signal each other. The mists of color show the flow of important molecules like glucose and oxygen. Kim Hager and Neal Prakash, University of California, Los Angeles View Media

Beta-galactosidase montage showing cryo-EM improvement--transparent background

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Composite image of beta-galactosidase showing how cryo-EM’s resolution has improved dramatically in recent years. Older images to the left, more recent to the right. Veronica Falconieri, Sriram Subramaniam Lab, National Cancer Institute View Media

Fluorescent microscopy of kidney tissue--close-up

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This photograph of kidney tissue, taken using fluorescent light microscopy, shows a close-up view of part of image 3723. Tom Deerinck , National Center for Microscopy and Imaging Research 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

Protein clumping in zinc-deficient yeast cells

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The green spots in this image are clumps of protein inside yeast cells that are deficient in both zinc and a protein called Tsa1 that prevents clumping. Colin MacDiarmid and David Eide, University of Wisconsin--Madison View Media

Body toxins

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Body organs such as the liver and kidneys process chemicals and toxins. These "target" organs are susceptible to damage caused by these substances. Crabtree + Company View Media

Computer model of cell membrane

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A computer model of the cell membrane, where the plasma membrane is red, endoplasmic reticulum is yellow, and mitochondria are blue. Bridget Wilson, University of New Mexico View Media

HeLa cells

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Multiphoton fluorescence image of cultured HeLa cells with a fluorescent protein targeted to the Golgi apparatus (orange), microtubules (green) and counterstained for DNA (cyan). National Center for Microscopy and Imaging Research (NCMIR) View Media

Plasma membrane (with labels)

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The plasma membrane is a cell's protective barrier. See image 2523 for an unlabeled version of this illustration. Featured in The Chemistry of Health. Crabtree + Company View Media

Independence Day

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This graphic that resembles a firework was created from a picture of a fruit fly spermatid. Sigi Benjamin-Hong, Rockefeller University View Media

Vimentin in a quail embryo

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Confocal image showing high levels of the protein vimentin (white) at the edge zone of a quail embryo. Cell nuclei are labeled green. Andrés Garcia, Georgia Tech View Media

Crane fly spermatocyte undergoing meiosis

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A crane fly spermatocyte during metaphase of meiosis-I, a step in the production of sperm. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

HIV Capsid

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This image is a computer-generated model of the approximately 4.2 million atoms of the HIV capsid, the shell that contains the virus' genetic material. Juan R. Perilla and the Theoretical and Computational Biophysics Group, University of Illinois at Urbana-Champaign View Media

Dolly the sheep

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Scientists in Scotland were the first to clone an animal, this sheep named Dolly. She later gave birth to Bonnie, the lamb next to her. View Media

Drugs enter skin (with labels)

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Drugs enter different layers of skin via intramuscular, subcutaneous, or transdermal delivery methods. See image 2531 for an unlabeled version of this illustration. Crabtree + Company View Media

Bone cancer cell

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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. Dylan Burnette and Jennifer Lippincott-Schwartz, NICHD View Media

Fly cells

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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

Bicycling cell

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A humorous treatment of the concept of a cycling cell. Judith Stoffer View Media

Cell-like compartments from frog eggs 5

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Cell-like compartments that spontaneously emerged from scrambled frog eggs, with nuclei (blue) from frog sperm. Endoplasmic reticulum (red) and microtubules (green) are also visible. Xianrui Cheng, Stanford University School of Medicine. View Media

Tracking embryonic zebrafish cells

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To better understand cell movements in developing embryos, researchers isolated cells from early zebrafish embryos and grew them as clusters. Liliana Solnica-Krezel, Washington University School of Medicine in St. Louis. View Media

Mosaicism in C. elegans (Black Background)

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In the worm C. elegans, double-stranded RNA made in neurons can silence matching genes in a variety of cell types through the transport of RNA between cells. Snusha Ravikumar, Ph.D., University of Maryland, College Park, and Antony M. Jose, Ph.D., University of Maryland, College Park View Media

Soft X-ray tomography of a pancreatic beta cell

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A color-coded, 3D model of a rat pancreatic β cell. This type of cell produces insulin, a hormone that helps regulate blood sugar. Carolyn Larabell, University of California, San Francisco. View Media

Movements of myosin

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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. Victoria Foe, University of Washington View Media

Molecules blocking Huntington's protein production

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The molecules that glow blue in these cultured cells prevent the expression of the mutant proteins that cause Huntington's disease. Jiaxin Hu, David W. Dodd and Robert H. E. Hudson, UT Southwestern Medical Center View Media

Heart muscle with reprogrammed skin cells

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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. Deepak Srivastava, Gladstone Institute of Cardiovascular Disease, via CIRM View Media

HeLa cells

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Scanning electron micrograph of just-divided HeLa cells. Zeiss Merlin HR-SEM. National Center for Microscopy and Imaging Research View Media

RAC1 activation in motile fibroblast

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Novel biosensor system maps the timing and location of Rac protein activation in a living mouse embryo fibroblast. Klaus Hahn, University of North Carolina, Chapel Hill Medical School View Media