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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.
Zebrafish larva
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You are face to face with a 6-day-old zebrafish larva. What look like eyes will become nostrils, and the bulges on either side will become eyes. Oscar Ruiz and George Eisenhoffer, University of Texas MD Anderson Cancer Center, Houston View MediaAn 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 MediaMouse liver labeled with fluorescent probe
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A mouse liver glows after being tagged with specially designed infrared-fluorescent protein (IFP). Xiaokun Shu, University of California, San Diego View MediaBacillus anthracis being killed
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Bacillus anthracis (anthrax) cells being killed by a fluorescent trans-translation inhibitor, which disrupts bacterial protein synthesis. John Alumasa, Keiler Laboratory, Pennsylvania State University View MediaCells 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 MediaAverage teen circadian cycle
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Circadian rhythms are physical, mental, and behavioral changes that follow a 24-hour cycle. Typical circadian rhythms lead to high energy during the middle of the day (10 a.m. NIGMS View MediaNatcher Building 02
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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 MediaBacteria shapes
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A colorized scanning electron micrograph of bacteria. Scanning electron microscopes allow scientists to see the three-dimensional surface of their samples. Tina Weatherby Carvalho, University of Hawaii at Manoa View MediaLife in balance
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Mitosis creates cells, and apoptosis kills them. The processes often work together to keep us healthy. Judith Stoffer View MediaTiny strands of tubulin, a protein in a cell's skeleton
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Just as our bodies rely on bones for structural support, our cells rely on a cellular skeleton. Pakorn Kanchanawong, National University of Singapore and National Heart, Lung, and Blood Institute, National Institutes of Health; and Clare Waterman, National Heart, Lung, and Blood Institute, National Institutes of Health View MediaBacteria in the mouse colon
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Image of the colon of a mouse mono-colonized with Bacteroides fragilis (red) residing within the crypt channel. The red staining is due to an antibody to B. Sarkis K. Mazmanian, California Institute of Technology View MediaDNA replication illustration (with labels)
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During DNA replication, each strand of the original molecule acts as a template for the synthesis of a new, complementary DNA strand. Crabtree + Company View MediaGroup of fluorescent C. elegans showing muscle and ribosomal protein
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Three 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 MediaCRISPR 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 MediaHen egg lysozyme (2)
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A crystal of hen egg lysozyme protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View MediaSimulation of uncontrolled avian flu outbreak
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This video simulation shows what an uncontrolled outbreak of transmissible avian flu among people living in Thailand might look like. Neil M. Ferguson, Imperial College London View MediaMicrotubule breakdown
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Like a building supported by a steel frame, a cell contains its own sturdy internal scaffolding made up of proteins, including microtubules. Eva Nogales, University of California, Berkeley View MediaGrowing hair follicle stem cells
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Wound healing requires the action of stem cells. Hermann Steller, Rockefeller University View MediaSingle-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 MediaActin flow
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Speckle microscopy analysis of actin cytoskeleton force. This is an example of NIH-supported research on single-cell analysis. Gaudenz Danuser, Harvard Medical School View MediaThe Structure of Cilia’s Doublet Microtubules
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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 MediaCoronavirus spike protein structure
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Coronaviruses are enveloped viruses responsible for 30 percent of mild respiratory infections and atypical deadly pneumonia in humans worldwide. Melody Campbell, UCSF View MediaGenetically 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 MediaIn vitro assembly of a cell-signaling pathway
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T cells are white blood cells that are important in defending the body against bacteria, viruses and other pathogens. Xiaolei Su, HHMI Whitman Center of the Marine Biological Laboratory View MediaBiofilm blocking fluid flow
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This time-lapse movie shows that bacterial communities called biofilms can create blockages that prevent fluid flow in devices such as stents and catheters over a period of about 56 hours. Bonnie Bassler, Princeton University View MediaG switch
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The G switch allows our bodies to respond rapidly to hormones. See images 2537 and 2538 for labeled versions of this image. Crabtree + Company View MediaNano-rainbow
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These vials may look like they're filled with colored water, but they really contain nanocrystals reflecting different colors under ultraviolet light. Shuming Nie, Emory University View MediaTranslation
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Ribosomes manufacture proteins based on mRNA instructions. Each ribosome reads mRNA, recruits tRNA molecules to fetch amino acids, and assembles the amino acids in the proper order. Judith Stoffer View MediaBiosensors 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 MediaMitochondria
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Bean-shaped mitochondria are cells' power plants. These organelles have their own DNA and replicate independently. The highly folded inner membranes are the site of energy generation. Judith Stoffer View MediaCryo-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 MediaTetrapolar mitosis
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This image shows an abnormal, tetrapolar mitosis. Chromosomes are highlighted pink. The cells shown are S3 tissue cultured cells from Xenopus laevis, African clawed frog. Gary Gorbsky, Oklahoma Medical Research Foundation View MediaComputer sketch of bird-and-flower DNA origami
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A computer-generated sketch of a DNA origami folded into a flower-and-bird structure. See also related image 3690. Hao Yan, Arizona State University View MediaMitosis - interphase
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A cell in interphase, at the start of mitosis: Chromosomes duplicate, and the copies remain attached to each other. Judith Stoffer View MediaProteasome
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This fruit fly spermatid recycles various molecules, including malformed or damaged proteins. Sigi Benjamin-Hong, Rockefeller University View MediaMicrosporidia in roundworm 3
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Many disease-causing microbes manipulate their host’s metabolism and cells for their own ends. Keir Balla and Emily Troemel, University of California San Diego View MediaBacterial cells migrating through the tissues of the squid light organ
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Vibrio fischeri cells (~ 2 mm), labeled with green fluorescent protein (GFP), passing through a very narrow bottleneck in the tissues (red) of the Hawaiian bobtail squid, Euprymna scolope Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. View MediaNatcher Building 09
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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 MediaFrom DNA to Protein (labeled)
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The genetic code in DNA is transcribed into RNA, which is translated into proteins with specific sequences. Crabtree + Company View MediaCell Nucleus and Lipid Droplets
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A cell nucleus (blue) surrounded by lipid droplets (yellow). James Olzmann, University of California, Berkeley View MediaMapping brain differences
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This image of the human brain uses colors and shapes to show neurological differences between two people. Arthur Toga, University of California, Los Angeles View MediaUbiquitin-fold modifier 1 from C. elegans
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Solution NMR structure of protein target WR41 (left) from C. elegans. Northeast Structural Genomics Consortium View MediaDynamin Fission
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Time lapse series shows short dynamin assemblies (not visible) constricting a lipid tube to make a "beads on a string" appearance, then cutting off one of the beads i.e., catalyzing membrane fission). Ramachandran, Pucadyil et al. , The Scripps Research Institute View MediaMouse heart muscle cells
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This image shows neonatal mouse heart cells. These cells were grown in the lab on a chip that aligns the cells in a way that mimics what is normally seen in the body. Kara McCloskey lab, University of California, Merced, via CIRM View MediaBrain cells in the hippocampus
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Hippocampal cells in culture with a neuron in green, showing hundreds of the small protrusions known as dendritic spines. Shelley Halpain, UC San Diego View MediaSuicidal 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 MediaChromium X-ray source
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In the determination of protein structures by X-ray crystallography, this unique soft (l = 2.29Å) X-ray source is used to collect anomalous scattering data from protein crystals containing light atoms The Southeast Collaboratory for Structural Genomics View MediaColorful communication
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The marine bacterium Vibrio harveyi glows when near its kind. Bonnie Bassler, Princeton University View MediaMitochondria and endoplasmic reticulum
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A computer model shows how the endoplasmic reticulum is close to and almost wraps around mitochondria in the cell. The endoplasmic reticulum is lime green and the mitochondria are yellow. Bridget Wilson, University of New Mexico View MediaSection of an electron density map
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Electron density maps such as this one are generated from the diffraction patterns of X-rays passing through protein crystals. The Southeast Collaboratory for Structural Genomics View Media