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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.
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
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
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
Circadian rhythm
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The human body keeps time with a master clock called the suprachiasmatic nucleus or SCN. Crabtree + Company 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
Mouse cerebellum close-up
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The cerebellum is the brain's locomotion control center. Every time you shoot a basketball, tie your shoe or chop an onion, your cerebellum fires into action. National Center for Microscopy and Imaging Research (NCMIR) 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
Worms and human infertility
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This montage of tiny, transparent C. elegans--or roundworms--may offer insight into understanding human infertility. Abby Dernburg, Lawrence Berkeley National Laboratory View Media
Natural nanomachine in action
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Using a supercomputer to simulate the movement of atoms in a ribosome, researchers looked into the core of this protein-making nanomachine and took snapshots. Kevin Sanbonmatsu, Los Alamos National Laboratory View Media
Migrating pigment cells
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Pigment cells are cells that give skin its color. David Parichy, University of Washington View Media
Snowflake yeast 3
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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
Central dogma, illustrated (with labels)
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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
Mitosis and meiosis compared-labeled
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Meiosis is used to make sperm and egg cells. During meiosis, a cell's chromosomes are copied once, but the cell divides twice. Judith Stoffer View Media
Transmission electron microscopy of coronary artery wall with elastin-rich ECM pseudocolored in light brown
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Elastin is a fibrous protein in the extracellular matrix (ECM). It is abundant in artery walls like the one shown here. As its name indicates, elastin confers elasticity. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media
Motor neuron progenitors derived from human ES cells
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Motor neuron progenitors (green) were derived from human embryonic stem cells. Image and caption information courtesy of the California Institute for Regenerative Medicine. Hans Keirstead lab, University of California, Irvine, via CIRM View Media
Biopixels
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Bioengineers were able to coax bacteria to blink in unison on microfluidic chips. This image shows a small chip with about 500 blinking bacterial colonies or biopixels. Jeff Hasty Lab, UC San Diego View Media
RAC1 activation in motile fibroblast
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Novel biosensor system maps the timing and location of Rac protein activation in a living mouse embryo fibroblast. Klaus Hahn, University of North Carolina, Chapel Hill Medical School View Media
Bacteria shapes
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A colorized scanning electron micrograph of bacteria. Scanning electron microscopes allow scientists to see the three-dimensional surface of their samples. Tina Weatherby Carvalho, University of Hawaii at Manoa View Media
Structure of heme, side view
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Molecular model of the struture of heme. Heme is a small, flat molecule with an iron ion (dark red) at its center. Rachel Kramer Green, RCSB Protein Data Bank View Media
Heart muscle with reprogrammed skin cells
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Skins cells were reprogrammed into heart muscle cells. The cells highlighted in green are remaining skin cells. Red indicates a protein that is unique to heart muscle. Deepak Srivastava, Gladstone Institute of Cardiovascular Disease, via CIRM View Media
Nucleolinus
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The nucleolinus is a cellular compartment that has been a lonely bystander in scientific endeavors. Mary Anne Alliegro, Marine Biological Laboratory View Media
Mouse cerebellum
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The cerebellum is the brain's locomotion control center. Found at the base of your brain, the cerebellum is a single layer of tissue with deep folds like an accordion. National Center for Microscopy and Imaging Research (NCMIR) View Media
Tex protein
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Model of a member from the Tex protein family, which is implicated in transcriptional regulation and highly conserved in eukaryotes and prokaryotes. New York Structural GenomiX Research Consortium, PSI View Media
Mouse brain 2
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A mouse brain that was genetically modified so that subpopulations of its neurons glow. Prayag Murawala, MDI Biological Laboratory and Hannover 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
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
Artificial cilia exhibit spontaneous beating
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Researchers have created artificial cilia that wave like the real thing. Zvonimir Dogic View Media
Misfolded proteins in mitochondria, 3-D video
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Three-dimensional image of misfolded proteins (green) within mitochondria (red). Related to image 5878. Rong Li, Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins 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
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
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
Fly cells
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If a picture is worth a thousand words, what's a movie worth? Denise Montell, Johns Hopkins University School of Medicine View Media
Nano-rainbow
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These vials may look like they're filled with colored water, but they really contain nanocrystals reflecting different colors under ultraviolet light. Shuming Nie, Emory University 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
Ribosome illustration from PDB
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Ribosomes are complex machines made up of more than 50 proteins and three or four strands of genetic material called ribosomal RNA (rRNA). From PDB’s Molecule of the Month collection (direct link: http://pdb101.rcsb.org/motm/121) Molecule of the Month illustrations are available under a CC-BY-4.0 license. Attribution should be given to David S. Goodsell and the RCSB PDB. View Media
Structure of Glutamate Dehydrogenase
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Some children are born with a mutation in a regulatory site on this enzyme that causes them to over-secrete insulin when they consume protein. Judy Coyle, Donald Danforth Plant Science Center 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
Smooth ER
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The endoplasmic reticulum comes in two types: Rough ER is covered with ribosomes and prepares newly made proteins; smooth ER specializes in making lipids and breaking down toxic molecules. Judith Stoffer View Media
Mitochondria from rat heart muscle cell
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These mitochondria (red) are from the heart muscle cell of a rat. Mitochondria have an inner membrane that folds in many places (and that appears here as striations). National Center for Microscopy and Imaging Research View Media
Cultured cells
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This image of laboratory-grown cells was taken with the help of a scanning electron microscope, which yields detailed images of cell surfaces. Tina Weatherby Carvalho, University of Hawaii at Manoa View Media
Time-lapse video of floral pattern in a mixture of two bacterial species, Acinetobacter baylyi and Escherichia coli, grown on a semi-solid agar for 24 hours
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This time-lapse video shows the emergence of a flower-like pattern in a mixture of two bacterial species, motile Acinetobacter baylyi and non-motile Escherichia coli (green), that are gr L. Xiong et al, eLife 2020;9: e48885 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
Cellular metropolis
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Like a major city, a cell teems with specialized workers that carry out its daily operations--making energy, moving proteins, or helping with other tasks. Kathryn Howell, University of Colorado Health Sciences Center View Media
Nucleotides make up DNA
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DNA consists of two long, twisted chains made up of nucleotides. Each nucleotide contains one base, one phosphate molecule, and the sugar molecule deoxyribose. Crabtree + Company View Media
Enzyme transition states
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The molecule on the left is an electrostatic potential map of the van der Waals surface of the transition state for human purine nucleoside phosphorylase. Vern Schramm, Albert Einstein College of Medicine of Yeshiva University View Media
Serum albumin structure 2
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Serum albumin (SA) is the most abundant protein in the blood plasma of mammals. SA has a characteristic heart-shape structure and is a highly versatile protein. Wladek Minor, University of Virginia View Media
Sticky stem cells
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Like a group of barnacles hanging onto a rock, these human cells hang onto a matrix coated glass slide. Ankur Singh and Andrés García, Georgia Institute of Technology 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
