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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.

Intasome

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Salk researchers captured the structure of a protein complex called an intasome (center) that lets viruses similar to HIV establish permanent infection in their hosts. National Resource for Automated Molecular Microscopy http://nramm.nysbc.org/nramm-images/ Source: Bridget Carragher View Media

Pig trypsin (3)

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Crystals 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

Activated mast cell surface

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A scanning electron microscope image of an activated mast cell. This image illustrates the interesting topography of the cell membrane, which is populated with receptors. Bridget Wilson, University of New Mexico View Media

Network diagram of genes, cellular components and processes (unlabeled)

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This image shows the hierarchical ontology of genes, cellular components and processes derived from large genomic datasets. From Dutkowski et al. Janusz Dutkowski and Trey Ideker 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

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

Honeybees marked with paint

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Researchers doing behavioral experiments with honeybees sometimes use paint or enamel to give individual bees distinguishing marks. Gene Robinson, University of Illinois at Urbana-Champaign. 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

Self-organizing proteins

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Under the microscope, an E. coli cell lights up like a fireball. Each bright dot marks a surface protein that tells the bacteria to move toward or away from nearby food and toxins. 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

Two mouse fibroblast cells

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Two mouse fibroblasts, one of the most common types of cells in mammalian connective tissue. They play a key role in wound healing and tissue repair. Dylan T. Burnette, Vanderbilt University School of Medicine. View Media

Crystals of CCD-1 in complex with cefotaxime

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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

Insulin production and fat sensing in fruit flies

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Fourteen neurons (magenta) in the adult Drosophila brain produce insulin, and fat tissue sends packets of lipids to the brain via the lipoprotein carriers (green). Akhila Rajan, Fred Hutchinson Cancer Center 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

Human embryonic stem cells on feeder cells

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This fluorescent microscope image shows human embryonic stem cells whose nuclei are stained green. Blue staining shows the surrounding supportive feeder cells. Michael Longaker lab, Stanford University School of Medicine, via CIRM View Media

Annotated TEM cross-section of C. elegans (roundworm)

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The worm Caenorhabditis elegans is a popular laboratory animal because its small size and fairly simple body make it easy to study. Piali Sengupta, Brandeis University View Media

Breast cancer cells change migration phenotypes

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Cancer cells can change their migration phenotype, which includes their shape and the way that they move to invade different tissues. Bo Sun, Oregon State University. View Media

Small blood vessels in a mouse retina

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Blood vessels at the back of the eye (retina) are used to diagnose glaucoma and diabetic eye disease. They also display characteristic changes in people with high blood pressure. National Center for Microscopy and Imaging Research View Media

A molecular interaction network in yeast 2

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The image visualizes a part of the yeast molecular interaction network. Keiichiro Ono, UCSD View Media

Cell-like compartments from frog eggs 6

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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

Chromium 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 Media

Beta-galactosidase montage showing cryo-EM improvement--gradient background

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Composite image of beta-galactosidase showing how cryo-EM’s resolution has improved dramatically in recent years. Older images to the left, more recent to the right. Veronica Falconieri, Sriram Subramaniam Lab, National Cancer Institute View Media

V. Cholerae Biofilm

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Industrious V. cholerae bacteria (yellow) tend to thrive in denser biofilms (left) while moochers (red) thrive in weaker biofilms (right). View Media

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. Allen Yen, Lab of Joseph Dougherty, Washington University School of Medicine in St. Louis. View Media

Rhodopsin bound to visual arrestin

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Rhodopsin is a pigment in the rod cells of the retina (back of the eye). It is extremely light-sensitive, supporting vision in low-light conditions. Protein Data Bank. 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

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

Magnetic Janus particle activating a T cell

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A Janus particle being used to activate a T cell, a type of immune cell. Yan Yu, Indiana University, Bloomington. View Media

Staphylococcus aureus aggregates on microstructured titanium surface

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Groups of Staphylococcus aureus bacteria (blue) attached to a microstructured titanium surface (green) that mimics an orthopedic implant used in joint replacement. Paul Stoodley, The Ohio State University. View Media

Research mentor and student

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A research mentor (Lori Eidson) and student (Nina Waldron, on the microscope) were 2009 members of the BRAIN (Behavioral Research Advancements In Neuroscience) program at Georgia State University in A Elizabeth Weaver, Georgia State University View Media

X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 6

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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

Protein crystals

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Structural biologists create crystals of proteins, shown here, as a first step in a process called X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View Media

Cytoscape network diagram 1

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Molecular biologists are increasingly relying on bioinformatics software to visualize molecular interaction networks and to integrate these networks with data such as gene expression profiles. Keiichiro Ono, Trey Ideker lab, University of California, San Diego View Media

Zebrafish head vasculature

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A zebrafish head with blood vessels shown in purple. Prayag Murawala, MDI Biological Laboratory and Hannover Medical School. View Media

Bacterial cells aggregated above a light-organ pore of the Hawaiian bobtail squid

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The beating of cilia on the outside of the Hawaiian bobtail squid’s light organ concentrates Vibrio fischeri cells (green) present in the seawater into aggregates near the pore-containing tis Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. View Media

Cryo-electron tomography of a Caulobacter bacterium

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3D image of Caulobacter bacterium with various components highlighted: cell membranes (red and blue), protein shell (green), protein factories known as ribosomes (yellow), and storage granules Peter Dahlberg, Stanford University. 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

Dynamic cryo-EM model of the human transcription preinitiation complex

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

Cell-like compartments emerging from scrambled frog eggs

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Cell-like compartments spontaneously emerge 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

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

Cell-free protein synthesizers

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Both instruments shown were developed by CellFree Sciences of Yokohama, Japan. Center for Eukaryotic Structural Genomics 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

Jack bean concanavalin A

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

Crawling cell

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A crawling cell with DNA shown in blue and actin filaments, which are a major component of the cytoskeleton, visible in pink. Actin filaments help enable cells to crawl. Dylan T. Burnette, Vanderbilt University School of Medicine. View Media

HeLa cells

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Multiphoton fluorescence image of cultured HeLa cells with a fluorescent protein targeted to the Golgi apparatus (orange), microtubules (green) and counterstained for DNA (cyan). National Center for Microscopy and Imaging Research (NCMIR) 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

“Two-faced” Janus particle activating a macrophage

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A macrophage—a type of immune cell that engulfs invaders—“eats” and is activated by a “two-faced” Janus particle. Yan Yu, Indiana University, Bloomington. View Media

Honeybee brain

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Insect brains, like the honeybee brain shown here, are very different in shape from human brains. Gene Robinson, University of Illinois at Urbana-Champaign. 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

X-ray crystallography

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X-ray crystallography allows researchers to see structures too small to be seen by even the most powerful microscopes. Crabtree + Company View Media