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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.
Introns (with labels)
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Genes are often interrupted by stretches of DNA (introns, blue) that do not contain instructions for making a protein. Crabtree + Company View MediaCarbon building blocks (with examples)
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The arrangement of identical molecular components can make a dramatic difference. For example, carbon atoms can be arranged into dull graphite (left) or sparkly diamonds (right). Crabtree + Company View MediaAntitoxin GhoS (Illustration 2)
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Structure of the bacterial antitoxin protein GhoS. GhoS inhibits the production of a bacterial toxin, GhoT, which can contribute to antibiotic resistance. Rebecca Page and Wolfgang Peti, Brown University and Thomas K. Wood, Pennsylvania State University View MediaDividing cell in metaphase
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This image of a mammalian epithelial cell, captured in metaphase, was the winning image in the high- and super-resolution microscopy category of the 2012 GE Healthcare Life Sciences Cell Imaging Compe Jane Stout in the laboratory of Claire Walczak, Indiana University, GE Healthcare 2012 Cell Imaging Competition View MediaArachnoidiscus diatom
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An Arachnoidiscus diatom with a diameter of 190µm. Michael Shribak, Marine Biological Laboratory/University of Chicago. View MediaInduced stem cells from adult skin 03
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The human skin cells pictured contain genetic modifications that make them pluripotent, essentially equivalent to embryonic stem cells. James Thomson, University of Wisconsin-Madison View MediaRabbit GPDA
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A crystal of rabbit GPDA protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View MediaStem cell differentiation
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Undifferentiated embryonic stem cells cease to exist a few days after conception. In this image, ES cells are shown to differentiate into sperm, muscle fiber, hair cells, nerve cells, and cone cells. Judith Stoffer View MediaEnzymes convert subtrates into products (with labels)
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Enzymes convert substrates into products very quickly. See image 2521 for an unlabeled version of this illustration. Featured in The Chemistry of Health. Crabtree + Company View MediaA mammalian eye has approximately 70 different cell types
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The incredible complexity of a mammalian eye (in this case from a mouse) is captured here. Each color represents a different type of cell. Bryan William Jones and Robert E. Marc, University of Utah View MediaDicer generates microRNAs (with labels)
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The enzyme Dicer generates microRNAs by chopping larger RNA molecules into tiny Velcro®-like pieces. MicroRNAs stick to mRNA molecules and prevent the mRNAs from being made into proteins. Crabtree + Company View MediaMosaicism 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 MediaPathways – 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 MediaFluorescent microscopy of kidney tissue
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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. Tom Deerinck , National Center for Microscopy and Imaging Research View MediaVDAC-1 (1)
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The structure of the pore-forming protein VDAC-1 from humans. Gerhard Wagner, Harvard Medical School View MediaYeast 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 MediaZinc finger
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The structure of a gene-regulating zinc finger protein bound to DNA. Jeremy M. Berg, National Institute of General Medical Sciences View MediaProtein clumping in zinc-deficient yeast cells
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The green spots in this image are clumps of protein inside yeast cells that are deficient in both zinc and a protein called Tsa1 that prevents clumping. Colin MacDiarmid and David Eide, University of Wisconsin--Madison View MediaSheep hemoglobin crystal
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A crystal of sheep hemoglobin protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View MediaH1N1 Influenza Virus
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Related to image 6355. Dr. Rommie Amaro, University of California, San Diego View MediaPathways: What's the Connection? | Different Jobs in a Science Lab
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Learn about some of the different jobs in a scientific laboratory and how researchers work as a team to make discoveries. National Institute of General Medical Sciences View MediaStructure of telomerase
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Scientists recently discovered the full molecular structure of telomerase, an enzyme important to aging and cancer. Jiansen Jiang, Edward J. Miracco, Z. Hong Zhou and Juli Feigon, University of California, Los Angeles; Kathleen Collins, University of California, Berkeley View MediaOptic nerve astrocytes
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Astrocytes in the cross section of a human optic nerve head Tom Deerinck and Keunyoung (“Christine”) Kim, NCMIR View MediaProtein 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 MediaStetten Lecture 2017poster image
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This image is featured on the poster for Dr. Rommie Amaro's 2017 Stetten Lecture. Dr. Rommie Amaro, University of California, San Diego View MediaRSV-Infected Cell
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Viral RNA (red) in an RSV-infected cell. Eric Alonas and Philip Santangelo, Georgia Institute of Technology and Emory University View MediaFruit fly sperm cells
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Developing fruit fly spermatids require caspase activity (green) for the elimination of unwanted organelles and cytoplasm via apoptosis. Hermann Steller, Rockefeller University View MediaSupernova bacteria
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Bacteria engineered to act as genetic clocks flash in synchrony. Here, a "supernova" burst in a colony of coupled genetic clocks just after reaching critical cell density. Jeff Hasty, UCSD View MediaTwo 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 MediaAverage teen circadian cycle
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Circadian rhythms are physical, mental, and behavioral changes that follow a 24-hour cycle. Typical circadian rhythms lead to high energy during the middle of the day (10 a.m. NIGMS View MediaPolarized cells- 01
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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 MediaBacterial glucose isomerase
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A crystal of bacterial glucose isomerase protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View MediaFruit fly ovaries
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Fruit fly (Drosophila melanogaster) ovaries with DNA shown in magenta and actin filaments shown in light blue. This image was captured using a confocal laser scanning microscope.Vladimir I. Gelfand, Feinberg School of Medicine, Northwestern University. View Media
Weblike sheath covering developing egg chambers in a giant grasshopper
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The lubber grasshopper, found throughout the southern United States, is frequently used in biology classes to teach students about the respiratory system of insects. Kevin Edwards, Johny Shajahan, and Doug Whitman, Illinois State University. View MediaStress Response in Cells
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Two highly stressed osteosarcoma cells are shown with a set of green droplet-like structures followed by a second set of magenta droplets. Julia F. Riley and Carlos A. Castañeda, Syracuse University View MediaNMR spectrometer
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This photo shows a Varian Unity Inova 900 MHz, 21.1 T standard bore magnet Nuclear Magnetic Resonnance (NMR) spectrometer. Center for Eukaryotic Structural Genomics View MediaChromium 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 MediaTime-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 MediaStaphylococcus aureus in the porous coating of a femoral hip stem
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Staphylococcus aureus bacteria (blue) on the porous coating of a femoral hip stem used in hip replacement surgery. Paul Stoodley, The Ohio State University. View MediaCalcium uptake during ATP production in mitochondria
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Living primary mouse embryonic fibroblasts. Mitochondria (green) stained with the mitochondrial membrane potential indicator, rhodamine 123. Nuclei (blue) are stained with DAPI. Lili Guo, Perelman School of Medicine, University of Pennsylvania View MediaArtificial cilia exhibit spontaneous beating
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Researchers have created artificial cilia that wave like the real thing. Zvonimir Dogic View MediaTranscription factor Sox17 controls embryonic development of certain internal organs
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During embryonic development, transcription factors (proteins that regulate gene expression) govern the differentiation of cells into separate tissues and organs. James M. Wells, Cincinnati Children's Hospital Medical Center View MediaDynamic 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 MediaOligoendopeptidase F from B. stearothermophilus
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Crystal structure of oligoendopeptidase F, a protein slicing enzyme from Bacillus stearothermophilus, a bacterium that can cause food products to spoil. Accelerated Technologies Center for Gene to 3D Structure/Midwest Center for Structural Genomics View MediaSuperconducting magnet
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Superconducting magnet for NMR research, from the February 2003 profile of Dorothee Kern in Findings. Mike Lovett View MediaPetri 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 MediaMath from the heart
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Watch a cell ripple toward a beam of light that turns on a movement-related protein. View Media