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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.

Rotavirus structure

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This image shows a computer-generated, three-dimensional map of the rotavirus structure. This virus infects humans and other animals and causes severe diarrhea in infants and young children. Bridget Carragher, The Scripps Research Institute, La Jolla, CA 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

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

Wound healing in process

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Wound healing requires the action of stem cells. Hermann Steller, Rockefeller University View Media

Pig alpha amylase

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Crystals of porcine alpha amylase protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine 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

Seeing signaling protein activation in cells 04

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Cdc42, a member of the Rho family of small guanosine triphosphatase (GTPase) proteins, regulates multiple cell functions, including motility, proliferation, apoptosis, and cell morphology. Klaus Hahn, University of North Carolina, Chapel Hill Medical School View Media

Q fever bacteria in an infected cell

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This image shows Q fever bacteria (yellow), which infect cows, sheep, and goats around the world and can infect humans, as well. When caught early, Q fever can be cured with antibiotics. Robert Heinzen, Elizabeth Fischer, and Anita Mora, National Institute of Allergy and Infectious Diseases, National Institutes of Health 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

Drosophila (fruit fly) myosin 1D motility assay

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Actin gliding powered by myosin 1D. Note the counterclockwise motion of the gliding actin filaments. Serapion Pyrpassopoulos and E. Michael Ostap, University of Pennsylvania View Media

Microarray 01

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Microarrays, also called gene chips, are tools that let scientists track the activity of hundreds or thousands of genes simultaneously. Maggie Werner-Washburne, University of New Mexico, Albuquerque 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

VDAC-1 (2)

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The structure of the pore-forming protein VDAC-1 from humans. Gerhard Wagner, Harvard Medical School View Media

Fungal lipase (1)

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Crystals of fungal lipase protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media

G 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 Media

Panorama view of golden mitochondria

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Mitochondria are the powerhouses of the cells, generating the energy the cells need to do their tasks and to stay alive. Torsten Wittmann, University of California, San Francisco 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

Simulation of controlled avian flu outbreak

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This video shows a controlled outbreak of transmissible avian flu among people living in Thailand. Neil M. Ferguson, Imperial College London View Media

VDAC video 01

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This video shows the structure of the pore-forming protein VDAC-1 from humans. Gerhard Wagner, Harvard Medical School View Media

Cell Nucleus and Lipid Droplets

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A cell nucleus (blue) surrounded by lipid droplets (yellow). James Olzmann, University of California, Berkeley View Media

Cells frozen in time

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The fledgling field of X-ray microscopy lets researchers look inside whole cells rapidly frozen to capture their actions at that very moment. Here, a yeast cell buds before dividing into two. Carolyn Larabell, University of California, San Francisco, and the Lawrence Berkeley National Laboratory View Media

NCMIR Intestine-2

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The small intestine is where most of our nutrients from the food we eat are absorbed into the bloodstream. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media

Snowflake yeast 1

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Multicellular yeast called snowflake yeast that researchers created through many generations of directed evolution from unicellular yeast. William Ratcliff, Georgia Institute of Technology. View Media

Interphase in Xenopus frog cells

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These images show frog cells in interphase. The cells are Xenopus XL177 cells, which are derived from tadpole epithelial cells. The microtubules are green and the chromosomes are blue. Claire Walczak, who took them while working as a postdoc in the laboratory of Timothy Mitchison. View Media

Human blood cells with Borrelia hermsii, a bacterium that causes relapsing fever

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Relapsing fever is caused by a bacterium and transmitted by certain soft-bodied ticks or body lice. The disease is seldom fatal in humans, but it can be very serious and prolonged. NIAID View Media

Yeast cell

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A whole yeast (Saccharomyces cerevisiae) cell viewed by X-ray microscopy. Inside, the nucleus and a large vacuole (red) are visible. Carolyn Larabell, University of California, San Francisco and the Lawrence Berkeley National Laboratory View Media

Fruit fly ovarioles

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Three fruit fly (Drosophila melanogaster) ovarioles (yellow, blue, and magenta) with egg cells visible inside them. Ovarioles are tubes in the reproductive systems of female insects. Vladimir I. Gelfand, Feinberg School of Medicine, Northwestern University. 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

Ear hair cells derived from embryonic stem cells

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Mouse embryonic stem cells matured into this bundle of hair cells similar to the ones that transmit sound in the ear. Stefen Heller, Stanford University, via CIRM View Media

Hawaiian bobtail squid

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An adult Hawaiian bobtail squid, Euprymna scolopes, swimming next to a submerged hand. Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. View Media

RNA strand (with labels)

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Ribonucleic acid (RNA) has a sugar-phosphate backbone and the bases adenine (A), cytosine (C), guanine (G), and uracil (U). Featured in The New Genetics. Crabtree + Company View Media

Protein purification robot

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Irina Dementieva, a biochemist, and Youngchang Kim, a biophysicist and crystallographer, work with the first robot of its type in the U.S. to automate protein purification. Midwest Center for Structural Genomics View Media

Telomeres

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The 46 human chromosomes are shown in blue, with the telomeres appearing as white pinpoints. Hesed Padilla-Nash and Thomas Ried, the National Cancer Institute, a part of NIH 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

Lily mitosis 01

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A light microscope image shows the chromosomes, stained dark blue, in a dividing cell of an African globe lily (Scadoxus katherinae). Andrew S. Bajer, University of Oregon, Eugene View Media

Normal vascular development in frog embryos

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In vivo vascular development in kdr:GFP frogs. Related to images 3403 and 3405. Hye Ji Cha, University of Texas at Austin 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

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

Mosaicism in C. elegans (White 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

Neural tube development

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Proteins in the neural tissues of this zebrafish embryo direct cells to line up and form the neural tube, which will become the spinal cord and brain. Alexander Schier, Harvard University 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

Arachnoidiscus diatom

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An Arachnoidiscus diatom with a diameter of 190µm. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

C. elegans trapped by carnivorous fungus

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Real-time footage of Caenorhabditis elegans, a tiny roundworm, trapped by a carnivorous fungus, Arthrobotrys dactyloides. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

Axolotl

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An axolotl—a type of salamander—that has been genetically modified so that its developing nervous system glows purple and its Schwann cell nuclei appear light blue. Prayag Murawala, MDI Biological Laboratory and Hannover Medical School. 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

HIV Infected Cell

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The human immunodeficiency virus (HIV), shown here as tiny purple spheres, causes the disease known as AIDS (for acquired immunodeficiency syndrome). Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media

HeLa cells

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Scanning electron micrograph of an apoptotic HeLa cell. Zeiss Merlin HR-SEM. National Center for Microscopy and Imaging Research 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