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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.

DNA 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 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

Snowflake yeast 2

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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

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

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

Motion in the brain

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Amid a network of blood vessels and star-shaped support cells, neurons in the brain signal each other. The mists of color show the flow of important molecules like glucose and oxygen. Kim Hager and Neal Prakash, University of California, Los Angeles View Media

Multivesicular bodies containing intralumenal vesicles assemble at the vacuole 2

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Collecting and transporting cellular waste and sorting it into recylable and nonrecylable pieces is a complex business in the cell. Matthew West and Greg Odorizzi, University of Colorado View Media

Protein purification robot in action 01

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A robot is transferring 96 purification columns to a vacuum manifold for subsequent purification procedures. The Northeast Collaboratory for Structural Genomics View Media

Mosaicism in C. elegans (Black 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

NCMIR Intestine-1

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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

Active site of sulfite oxidase

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Sulfite oxidase is an enzyme that is essential for normal neurological development in children. John Enemark, University of Arizona View Media

Fluorescent microscopy of kidney tissue--close-up

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This photograph of kidney tissue, taken using fluorescent light microscopy, shows a close-up view of part of image 3723. Tom Deerinck , National Center for Microscopy and Imaging Research View Media

Cell eyes clock

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Cells keep time to know when to retire. Judith Stoffer View Media

From 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 Media

RNase A (1)

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

Dividing yeast cells with nuclear envelopes and spindle pole bodies

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Time-lapse video of yeast cells undergoing cell division. Nuclear envelopes are shown in green, and spindle pole bodies, which help pull apart copied genetic information, are shown in magenta. Alaina Willet, Kathy Gould’s lab, Vanderbilt University. View Media

G switch (with labels and stages)

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The G switch allows our bodies to respond rapidly to hormones. G proteins act like relay batons to pass messages from circulating hormones into cells. Crabtree + Company View Media

mDia1 antibody staining- 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

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

Genetic mosaicism in fruit flies

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Fat tissue from the abdomen of a genetically mosaic adult fruit fly. Genetic mosaicism means that the fly has cells with different genotypes even though it formed from a single zygote. Akhila Rajan, Fred Hutchinson Cancer Center View Media

Lily mitosis 04

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A light microscope image of a cell from the endosperm of an African globe lily (Scadoxus katherinae). This is one frame of a time-lapse sequence that shows cell division in action. Andrew S. Bajer, University of Oregon, Eugene View Media

X-ray crystallography (with labels)

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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

Color-coded chromosomes

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By mixing fluorescent dyes like an artist mixes paints, scientists are able to color code individual chromosomes. Anna Jauch, Institute of Human Genetics, Heidelberg, Germany View Media

Folding@Home

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Stanford University scientist Vijay Pande decided to couple the power of computers with the help of the public. Judith Stoffer View Media

Plastic-eating enzymes

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PETase enzyme degrades polyester plastic (polyethylene terephthalate, or PET) into monohydroxyethyl terephthalate (MHET). Amy Wu and Christine Zardecki, RCSB Protein Data Bank. View Media

Chang Shan

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For thousands of years, Chinese herbalists have treated malaria using Chang Shan, a root extract from a type of hydrangea that grows in Tibet and Nepal. Paul Schimmel Lab, Scripps Research Institute View Media

Culex quinquefasciatus mosquito larva

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A mosquito larva with genes edited by CRISPR. The red-orange glow is a fluorescent protein used to track the edits. Valentino Gantz, University of California, San Diego. View Media

Plant resistosome

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The research organism Arabidopsis thaliana forms a large molecular machine called a resistosome to fight off infections. Amy Wu and Christine Zardecki, RCSB Protein Data Bank. 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

LONI movie screenshot

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Related to image 5870. 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

Simulation 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 Media

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

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

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

Bioluminescent imaging in adult zebrafish - lateral 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

Lorsch Swearing In

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Jon Lorsch at his swearing in as NIGMS director in August 2013. Also shown are Francis Collins, NIH Director, and Judith Greenberg, former NIGMS Acting Director. 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

Movie of the 19S proteasome subunit processing a protein substrate

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The proteasome is a critical multiprotein complex in the cell that breaks down and recycles proteins that have become damaged or are no longer needed. Andreas Martin, HHMI View Media

Fruit fly larvae brains showing tubulin

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Two fruit fly (Drosophila melanogaster) larvae brains with neurons expressing fluorescently tagged tubulin protein. Vladimir I. Gelfand, Feinberg School of Medicine, Northwestern University. View Media

Central dogma, illustrated

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DNA encodes RNA, which encodes protein. DNA is transcribed to make messenger RNA (mRNA). The mRNA sequence (dark red strand) is complementary to the DNA sequence (blue strand). Crabtree + Company View Media

Clathrin-mediated endocytosis

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Endocytosis is the process by which cells are able to take up membrane and extracellular materials through the formation of a small intracellular bubble, called a vesicle. Janet Iwasa, University of Utah 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

Anchor cell in basement membrane

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An anchor cell (red) pushes through the basement membrane (green) that surrounds it. Elliott Hagedorn, Duke University. View Media

Thermotoga maritima and its metabolic network

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A combination of protein structures determined experimentally and computationally shows us the complete metabolic network of a heat-loving bacterium. View Media

Tracking cells in a gastrulating zebrafish embryo

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During development, a zebrafish embryo is transformed from a ball of cells into a recognizable body plan by sweeping convergence and extension cell movements. This process is called gastrulation. Liliana Solnica-Krezel, Washington University School of Medicine in St. Louis. View Media

Pathways – Bacteria vs. Viruses: What's the Difference?

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Learn about how bacteria and viruses differ, how they each can make you sick, and how they can or cannot be treated. National Institute of General Medical Sciences View Media

Circadian rhythm neurons in the fruit fly brain

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Some nerve cells (neurons) in the brain keep track of the daily cycle. This time-keeping mechanism, called the circadian clock, is found in all animals including us. Justin Blau, New York University View Media

Hippocampal neuron from rodent brain

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Hippocampal neuron from rodent brain with dendrites shown in blue. The hundreds of tiny magenta, green and white dots are the dendritic spines of excitatory synapses. Shelley Halpain, UC San Diego View Media

NCMIR Tongue 2

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Microscopy image of a tongue. One in a series of two, see image 5810 National Center for Microscopy and Imaging Research (NCMIR) View Media