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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.
Leading cells with light
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A blue laser beam turns on a protein that helps this human cancer cell move. Responding to the stimulus, the protein, called Rac1, first creates ruffles at the edge of the cell. Yi Wu, University of North Carolina View Media
Bond types (with labels)
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Ionic and covalent bonds hold molecules, like sodium chloride and chlorine gas, together. Hydrogen bonds among molecules, notably involving water, also play an important role in biology. Crabtree + Company View Media
Atomic-level structure of the HIV capsid
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This animation shows atoms of the HIV capsid, the shell that encloses the virus's genetic material. Juan R. Perilla and the Theoretical and Computational Biophysics Group, University of Illinois at Urbana-Champaign 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
Cysteine dioxygenase from mouse
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Model of the mammalian iron enzyme cysteine dioxygenase from a mouse. Center for Eukaryotic Structural Genomics, PSI View Media
Retinal pigment epithelium derived from human ES cells
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This color-enhanced image is a scanning electron microscope image of retinal pigment epithelial (RPE) cells derived from human embryonic stem cells. David Hinton lab, University of Southern California, via CIRM View Media
Microtubule dynamics in real time
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Cytoplasmic linker protein (CLIP)-170 is a microtubule plus-end-tracking protein that regulates microtubule dynamics and links microtubule ends to different intracellular structures. Gary Borisy, Marine Biology Laboratory View Media
Chromosome fiber 01
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This microscopic image shows a chromatin fiber--a DNA molecule bound to naturally occurring proteins. Marc Green and Susan Forsburg, University of Southern California View Media
HeLa cells
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Multiphoton fluorescence image of HeLa cells stained with the actin binding toxin phalloidin (red), microtubules (cyan) and cell nuclei (blue). Nikon RTS2000MP custom laser scanning microscope. National Center for Microscopy and Imaging Research (NCMIR) View Media
CRISPR Illustration Frame 3
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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
Z rings in bacterial division
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Lab-made liposomes contract where Z rings have gathered together and the constriction forces are greatest (arrows). Masaki Osawa, Duke University View Media
RNA interference (with labels)
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RNA interference or RNAi is a gene-silencing process in which double-stranded RNAs trigger the destruction of specific RNAs. Crabtree + Company View Media
Artificial cilia exhibit spontaneous beating
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Researchers have created artificial cilia that wave like the real thing. Zvonimir Dogic View Media
Golgi
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The Golgi complex, also called the Golgi apparatus or, simply, the Golgi. Judith Stoffer View Media
Video of Calling Cards in a mouse brain
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The green spots in this mouse brain are cells labeled with Calling Cards, a technology that records molecular events in brain cells as they mature. NIH Director's Blog View Media
Dividing cell
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As this cell was undergoing cell division, it was imaged with two microscopy techniques: differential interference contrast (DIC) and confocal. The DIC view appears in blue and shows the entire cell. Dylan T. Burnette, Vanderbilt University School of Medicine. View Media
Focal adhesions (with labels)
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Cells walk along body surfaces via tiny "feet," called focal adhesions, that connect with the extracellular matrix. Crabtree + Company View Media
Spinal nerve cells
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Neurons (green) and glial cells from isolated dorsal root ganglia express COX-2 (red) after exposure to an inflammatory stimulus (cell nuclei are blue). Lawrence Marnett, Vanderbilt University View Media
Mandelate racemase from B. subtilis
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Model of the mandelate racemase enzyme from Bacillus subtilis, a bacterium commonly found in soil. New York Structural GenomiX Research Consortium, PSI View Media
Body toxins (with labels)
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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
A molecular interaction network in yeast 1
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The image visualizes a part of the yeast molecular interaction network. Keiichiro Ono, UCSD View Media
Influenza virus attaches to host membrane
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Influenza A infects a host cell when hemagglutinin grips onto glycans on its surface. Crabtree + Company View Media
Transmission electron microscopy showing cross-section of the node of Ranvier
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Nodes of Ranvier are short gaps in the myelin sheath surrounding myelinated nerve cells (axons). Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media
Bioluminescence in a Tube
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Details about the basic biology and chemistry of the ingredients that produce bioluminescence are allowing scientists to harness it as an imaging tool. Credit: Nathan Shaner, Scintillon Institute. Nathan Shaner, Scintillon Institute View Media
Yeast cells with endocytic actin patches
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Yeast cells with endocytic actin patches (green). These patches help cells take in outside material. When a cell is in interphase, patches concentrate at its ends. Alaina Willet, Kathy Gould’s lab, Vanderbilt University. View Media
Culex quinquefasciatus mosquito larvae
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Mosquito larvae with genes edited by CRISPR swimming in water. Valentino Gantz, University of California, San Diego. View Media
A mammalian eye has approximately 70 different cell types
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The incredible complexity of a mammalian eye (in this case from a mouse) is captured here. Each color represents a different type of cell. Bryan William Jones and Robert E. Marc, University of Utah View Media
White Poppy (cropped)
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A cropped image of a white poppy. View poppy uncropped here 3424. Judy Coyle, Donald Danforth Plant Science Center View Media
Electrostatic map of the adeno-associated virus
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The new highly efficient parallelized DelPhi software was used to calculate the potential map distribution of an entire virus, the adeno-associated virus, which is made up of more than 484,000 atoms. Emil Alexov, Clemson 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
Repairing DNA
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Like a watch wrapped around a wrist, a special enzyme encircles the double helix to repair a broken strand of DNA. Tom Ellenberger, Washington University School of Medicine View Media
Automated crystal screening system
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Automated crystal screening systems such as the one shown here are becoming a common feature at synchrotron and other facilities where high-throughput crystal structure determination is being carried Southeast Collaboratory for Structural Genomics View Media
A drug's life in the body
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A drug's life in the body. Medicines taken by mouth pass through the liver before they are absorbed into the bloodstream. Crabtree + Company 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
Bicycling cell
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A humorous treatment of the concept of a cycling cell. Judith Stoffer 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
Spreading Cells- 02
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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
Pig trypsin (2)
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A crystal of porcine trypsin protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media
3D image of actin in a cell
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Actin is an essential protein in a cell's skeleton (cytoskeleton). It forms a dense network of thin filaments in the cell. Xiaowei Zhuang, Howard Hughes Medical Institute, Harvard University View Media
Microsporidia 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 Media
Cascade reaction promoted by water
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This illustration of an epoxide-opening cascade promoted by water emulates the proposed biosynthesis of some of the Red Tide toxins. Tim Jamison, Massachusetts Institute of Technology 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
Human retinal organoid
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A replica of a human retina grown from stem cells. Kevin Eliceiri, University of Wisconsin-Madison. View Media
Sponge
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Many of today's medicines come from products found in nature, such as this sponge found off the coast of Palau in the Pacific Ocean. Phil Baran, Scripps Research Institute View Media
Transient receptor potential channel TRPV5
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A 3D reconstruction of a transient receptor potential channel called TRPV5 that was created based on cryo-electron microscopy images. Vera Moiseenkova-Bell, University of Pennsylvania. 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
Nucleolus subcompartments spontaneously self-assemble 1
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The nucleolus is a small but very important protein complex located in the cell's nucleus. Nilesh Vaidya, Princeton University View Media
tRNA splicing enzyme endonuclease in humans
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An NMR solution structure model of the transfer RNA splicing enzyme endonuclease in humans (subunit Sen15). This represents the first structure of a eukaryotic tRNA splicing endonuclease subunit. Center for Eukaryotic Structural Genomics, PSI View Media
Nucleolus subcompartments spontaneously self-assemble 2
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The nucleolus is a small but very important protein complex located in the cell's nucleus. Nilesh Vaidya, Princeton University View Media
Respiratory droplet
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This painting shows a cross section of a small respiratory droplet, like the ones that are thought to transmit SARS-CoV-2, the virus that causes COVID-19. Amy Wu and Christine Zardecki, RCSB Protein Data Bank. View Media
