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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.

Cells lining the trachea

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In this image, viewed with a ZEISS ORION NanoFab microscope, the community of cells lining a mouse airway is magnified more than 10,000 times. Eva Mutunga and Kate Klein, University of the District of Columbia and National Institute of Standards and Technology View Media

Cellular metropolis

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Like a major city, a cell teems with specialized workers that carry out its daily operations--making energy, moving proteins, or helping with other tasks. Kathryn Howell, University of Colorado Health Sciences Center View Media

Chemokine CXCR4 receptor

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The receptor is shown bound to a small molecule peptide called CVX15. Raymond Stevens, The Scripps Research Institute View Media

Genetically identical mycobacteria respond differently to antibiotic 2

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Antibiotic resistance in microbes is a serious health concern. So researchers have turned their attention to how bacteria undo the action of some antibiotics. Bree Aldridge, Tufts University View Media

Cultured cells

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This image of laboratory-grown cells was taken with the help of a scanning electron microscope, which yields detailed images of cell surfaces. Tina Weatherby Carvalho, University of Hawaii at Manoa View Media

Bence Jones protein MLE

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A crystal of Bence Jones protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine 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

Color-coded chromosomes

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By mixing fluorescent dyes like an artist mixes paints, scientists are able to color code individual chromosomes. Anna Jauch, Institute of Human Genetics, Heidelberg, Germany View Media

Dimeric ferredoxin-like protein from an unidentified marine microbe

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This is the first structure of a protein derived from the metagenomic sequences collected during the Sorcerer II Global Ocean Sampling project. Joint Center for Structural Genomics View Media

Crab larva eye

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Colorized scanning electron micrographs progressively zoom in on the eye of a crab larva. In the higher-resolution frames, bacteria are visible on the eye. Tina Weatherby Carvalho, University of Hawaii at Manoa 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

Glycan arrays

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The signal is obtained by allowing proteins in human serum to interact with glycan (polysaccharide) arrays. The arrays are shown in replicate so the pattern is clear. Ola Blixt, Scripps Research Institute 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

Katanin protein regulates anaphase

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The microtubule severing protein, katanin, localizes to chromosomes and regulates anaphase A in mitosis. David Sharp, Albert Einstein College of Medicine View Media

Epigenetic code (with labels)

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The "epigenetic code" controls gene activity with chemical tags that mark DNA (purple diamonds) and the "tails" of histone proteins (purple triangles). Crabtree + Company View Media

Bacteria working to eat

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Gram-negative bacteria perform molecular acrobatics just to eat. Because they're encased by two membranes, they must haul nutrients across both. Emad Tajkhorshid, University of Illinois at Urbana-Champaign View Media

Partial Model of a Cilium’s Doublet Microtubule

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Cilia (cilium in singular) are complex molecular machines found on many of our cells. Brown Lab, Harvard Medical School and Veronica Falconieri Hays. View Media

Sea urchin embryo 02

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Stereo triplet of a sea urchin embryo stained to reveal actin filaments (orange) and microtubules (blue). George von Dassow, University of Washington View Media

Suicidal Stem Cells

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Embryonic stem cells store pre-activated Bax (red) in the Golgi, near the nucleus (blue). Featured in the June 21, 2012, issue of Biomedical Beat. Mohanish Deshmukh View Media

Myosin V binding to actin

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This simulation of myosin V binding to actin was created using the software tool Protein Mechanica. Simbios, NIH Center for Biomedical Computation at Stanford View Media

Natcher Building 04

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NIGMS staff are located in the Natcher Building on the NIH campus. Alisa Machalek, National Institute of General Medical Sciences View Media

CRISPR Illustration

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This illustration shows, in simplified terms, how the CRISPR-Cas9 system can be used as a gene-editing tool. National Institute of General Medical Sciences. View Media

Genetic patchworks

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Each point in these colorful patchworks represents the correlation between two sleep-associated genes in fruit flies. Susan Harbison and Trudy Mackay, North Carolina State University View Media

Central dogma, illustrated

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DNA encodes RNA, which encodes protein. DNA is transcribed to make messenger RNA (mRNA). The mRNA sequence (dark red strand) is complementary to the DNA sequence (blue strand). Crabtree + Company View Media

Microtubules in African green monkey cells

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Microtubules in African green monkey cells. Microtubules are strong, hollow fibers that provide cells with structural support. Melike Lakadamyali, Perelman School of Medicine at the University of Pennsylvania. View Media

Bovine trypsin

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A crystal of bovine trypsin protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media

Beta 2-adrenergic receptor

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The receptor is shown bound to a partial inverse agonist, carazolol. Raymond Stevens, The Scripps Research Institute View Media

An adult Hawaiian bobtail squid

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An adult female Hawaiian bobtail squid, Euprymna scolopes, with its mantle cavity exposed from the underside. Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. View Media

Statistical cartography

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Like a world of its own, this sphere represents all the known chemical reactions in the E. coli bacterium. Luis A. Nunes Amaral, Northwestern University View Media

Hsp33 figure 2

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Featured in the March 15, 2012 issue of Biomedical Beat. Related to Hsp33 Figure 1, image 3354. Ursula Jakob and Dana Reichmann, University of Michigan View Media

Vesicle traffic

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This illustration shows vesicle traffic inside a cell. Judith Stoffer View Media

Molecular model of freshly made Rous sarcoma virus (RSV)

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Viruses have been the foes of animals and other organisms for time immemorial. Boon Chong Goh, University of Illinois at Urbana-Champaign 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

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

PSI: from genes to structures

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The goal of the Protein Structure Initiative (PSI) is to determine the three-dimensional shapes of a wide range of proteins by solving the structures of representative members of each protein family f National Institute of General Medical Sciences View Media

X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 2

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X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor. Markus A. Seeliger, Stony Brook University Medical School and David R. Liu, Harvard University View Media

The eye uses many layers of nerve cells to convert light into sight

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This image captures the many layers of nerve cells in the retina. The top layer (green) is made up of cells called photoreceptors that convert light into electrical signals to relay to the brain. Wei Li, National Eye Institute, National Institutes of Health View Media

Lily mitosis 13

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A light microscope image of cells 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

Closeup of fluorescent C. elegans showing muscle and ribosomal protein

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Closeup of C. elegans, tiny roundworms, with a ribosomal protein glowing red and muscle fibers glowing green. Researchers used these worms to study a molecular pathway that affects aging. Jarod Rollins, Mount Desert Island Biological Laboratory. 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

CRISPR Illustration Frame 4

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This illustration shows, in simplified terms, how the CRISPR-Cas9 system can be used as a gene-editing tool. National Institute of General Medical Sciences. View Media

Fruit fly ovary

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A fruit fly ovary, shown here, contains as many as 20 eggs. Fruit flies are not merely tiny insects that buzz around overripe fruit—they are a venerable scientific tool. Denise Montell, Johns Hopkins University and University of California, Santa Barbara View Media

Enzymes convert subtrates into products

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Enzymes convert substrates into products very quickly. See image 2522 for a labeled version of this illustration. Featured in The Chemistry of Health. Crabtree + Company View Media

Single-cell “radios” video

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Individual cells are color-coded based on their identity and signaling activity using a protein circuit technology developed by the Coyle Lab. Scott Coyle, University of Wisconsin-Madison. View Media

Structure of Glutamate Dehydrogenase

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Some children are born with a mutation in a regulatory site on this enzyme that causes them to over-secrete insulin when they consume protein. Judy Coyle, Donald Danforth Plant Science Center View Media

Kinesin moves cellular cargo

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A protein called kinesin (blue) is in charge of moving cargo around inside cells and helping them divide. Charles Sindelar, Yale University View Media

Retroviruses as fossils

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DNA doesn't leave a fossil record in stone, the way bones do. Instead, the DNA code itself holds the best evidence for organisms' genetic history. Emily Harrington, science illustrator View Media

Dimeric association of receptor-type tyrosine-protein phosphatase

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Model of the catalytic portion of an enzyme, receptor-type tyrosine-protein phosphatase from humans. The enzyme consists of two identical protein subunits, shown in blue and green. New York Structural GenomiX Research Consortium, PSI View Media

Tiny points of light in a quantum dot

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This fingertip-shaped group of lights is a microscopic crystal called a quantum dot. About 10,000 times thinner than a sheet of paper, the dot radiates brilliant colors under ultraviolet light. Sandra Rosenthal and James McBride, Vanderbilt University, and Stephen Pennycook, Oak Ridge National Laboratory View Media

Single-cell “radios” image

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Individual cells are color-coded based on their identity and signaling activity using a protein circuit technology developed by the Coyle Lab. Scott Coyle, University of Wisconsin-Madison. View Media