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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.

X-ray diffraction pattern from a crystallized cefotaxime-CCD-1 complex

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CCD-1 is an enzyme produced by the bacterium Clostridioides difficile that helps it resist antibiotics. Keith Hodgson, Stanford University. 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

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

Electrostatic map of human spermine synthase

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From PDB entry 3c6k, Crystal structure of human spermine synthase in complex with spermidine and 5-methylthioadenosine. Emil Alexov, Clemson University 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

Pig trypsin crystal

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

Regenerating lizard tail

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The interior of a regenerating lizard tail 14 days after the original tail was amputated. Thomas Lozito, University of Southern California. 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

Yeast cells entering mitosis

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Yeast cells entering mitosis, also known as cell division. The green and magenta dots are two proteins that play important roles in mitosis. They show where the cells will split. Alaina Willet, Kathy Gould’s lab, Vanderbilt University. View Media

Wild-type and mutant fruit fly ovaries

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The two large, central, round shapes are ovaries from a typical fruit fly (Drosophila melanogaster). Vladimir I. Gelfand, Feinberg School of Medicine, Northwestern University. 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

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

Chromatin in human fibroblast

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The nucleus of a human fibroblast cell with chromatin—a substance made up of DNA and proteins—shown in various colors. Melike Lakadamyali, Perelman School of Medicine at the University of Pennsylvania. View Media

TFIID complex binds DNA to start gene transcription

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Gene transcription is a process by which the genetic information encoded in DNA is transcribed into RNA. Eva Nogales, Berkeley Lab 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

Adult Hawaiian bobtail squid burying in the sand

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Each morning, the nocturnal Hawaiian bobtail squid, Euprymna scolopes, hides from predators by digging into the sand. At dusk, it leaves the sand again to hunt. Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. 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

Endoplasmic reticulum abnormalities 2

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Human cells with the gene that codes for the protein FIT2 deleted. After an experimental intervention, they are expressing a nonfunctional version of FIT2, shown in green. Michel Becuwe, Harvard University. View Media

Pores on the surface of the Hawaiian bobtail squid light organ

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The light organ (~0.5 mm across) of a juvenile Hawaiian bobtail squid, Euprymna scolopes, stained blue. Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. View Media

DNase

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

Glow-in-the-dark salamanders

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These six-month-old axolotls, a kind of salamander, glow green and blue under ultraviolet light. That's because they were genetically modified to make harmless green fluorescent protein, or GFP. View Media

Zinc levels in a plant leaf

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Zinc is required for the function of more than 300 enzymes, including those that help regulate gene expression, in various organisms including humans. Suzana Car, Dartmouth College View Media

EM of yeast cell division

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Cell division is an incredibly coordinated process. Matthew West and Greg Odorizzi, University of Colorado View Media

Relapsing fever bacterium (gray) and red blood cells

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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

Hen egg lysozyme (1)

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Crystals 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 Media

800 MHz NMR magnet

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Scientists use nuclear magnetic spectroscopy (NMR) to determine the detailed, 3D structures of molecules. Asokan Anbanandam, University of Kansas View Media

Podocytes from a chronically diseased kidney

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This scanning electron microscope (SEM) image shows podocytes--cells in the kidney that play a vital role in filtering waste from the bloodstream--from a patient with chronic kidney disease. Olga Troyanskaya, Princeton University and Matthias Kretzler, University of Michigan View Media

Fat cells (red) and blood vessels (green)

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A mouse's fat cells (red) are shown surrounded by a network of blood vessels (green). Daniela Malide, National Heart, Lung, and Blood Institute, National Institutes of Health 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

X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 3

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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

Computer 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 Media

Fluorescence in situ hybridization (FISH) in mouse ES cells shows DNA interactions

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Researchers used fluorescence in situ hybridization (FISH) to confirm the presence of long range DNA-DNA interactions in mouse embryonic stem cells. Kathrin Plath, University of California, Los Angeles View Media

X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 4

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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

Modeling disease spread

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What looks like a Native American dream catcher is really a network of social interactions within a community. Stephen Eubank, University of Virginia Biocomplexity Institute (formerly Virginia Bioinformatics Institute) View Media

Phagosome in macrophage cell

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A sensor particle being engulfed by a macrophage—an immune cell—and encapsuled in a compartment called a phagosome. The phagosome then fuses with lysosomes—another type of compartment. Yan Yu, Indiana University, Bloomington. View Media

Fruitful dyes

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These colorful, computer-generated ribbons show the backbone of a molecule that glows a fluorescent red. Roger Y. Tsien, University of California, San Diego View Media

Color coding of the Drosophila brain - black background

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This image results from a research project to visualize which regions of the adult fruit fly (Drosophila) brain derive from each neural stem cell. Yong Wan from Charles Hansen’s lab, University of Utah. Data preparation and visualization by Masayoshi Ito in the lab of Kei Ito, University of Tokyo. View Media

Petri dish containing C. elegans

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This Petri dish contains microscopic roundworms called Caenorhabditis elegans. Researchers used these particular worms to study how C. H. Robert Horvitz and Dipon Ghosh, Massachusetts Institute of Technology. View Media

Antibiotic-surviving bacteria

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Colonies of bacteria growing despite high concentrations of antibiotics. These colonies are visible both by eye, as seen on the left, and by bioluminescence imaging, as seen on the right. Paul Stoodley, The Ohio State University. View Media

Confocal microscopy image of two Drosophila ovarioles

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Ovarioles in female insects are tubes in which egg cells (called oocytes) form at one end and complete their development as they reach the other end of the tube. 2004 Olympus BioScapes Competition View Media

Mapping metabolic activity

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Like a map showing heavily traveled roads, this mathematical model of metabolic activity inside an E. coli cell shows the busiest pathway in white. Albert-László Barabási, University of Notre Dame 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

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

Bioluminescent imaging in adult zebrafish - 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

Dinosaur evolutionary tree

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Analysis of 68 million-year-old collagen molecule fragments preserved in a T. Chris Organ, Harvard University View Media

Cell-like compartments from 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

Fruit fly spermatids

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Developing spermatids (precursors of mature sperm cells) begin as small, round cells and mature into long-tailed, tadpole-shaped ones. Lacramioara Fabian, The Hospital for Sick Children, Toronto, Canada View Media

Trigonium diatom

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A Trigonium diatom imaged by a quantitative orientation-independent differential interference contrast (OI-DIC) microscope. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

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

C. elegans showing internal structures

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An image of Caenorhabditis elegans, a tiny roundworm, showing internal structures including the intestine, pharynx, and body wall muscle. C. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media