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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.

Lysosomes and microtubules

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Lysosomes (yellow) and detyrosinated microtubules (light blue). Lysosomes are bubblelike organelles that take in molecules and use enzymes to break them down. Melike Lakadamyali, Perelman School of Medicine at the University of Pennsylvania. View Media

A bundle of myelinated peripheral nerve cells (axons)

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The extracellular matrix (ECM) is most prevalent in connective tissues but also is present between the stems (axons) of nerve cells. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media

Human fibroblast undergoing cell division

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During cell division, cells physically divide after separating their genetic material to create two daughter cells that are genetically identical to the parent cell. Nilay Taneja, Vanderbilt University, and Dylan T. Burnette, Ph.D., Vanderbilt University School of Medicine. View Media

Cell-like compartments emerging from scrambled 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

Brain cells in the hippocampus

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Hippocampal cells in culture with a neuron in green, showing hundreds of the small protrusions known as dendritic spines. Shelley Halpain, UC San Diego View Media

Mouse cerebellum in pink and blue

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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

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

G switch

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The G switch allows our bodies to respond rapidly to hormones. See images 2537 and 2538 for labeled versions of this image. Crabtree + Company View Media

Anthrax bacteria (green) being swallowed by an immune system cell

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Multiple anthrax bacteria (green) being enveloped by an immune system cell (purple). Anthrax bacteria live in soil and form dormant spores that can survive for decades. Camenzind G. Robinson, Sarah Guilman, and Arthur Friedlander, United States Army Medical Research Institute of Infectious Diseases View Media

Arabidopsis leaf injected with a pathogen

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This is a magnified view of an Arabidopsis thaliana leaf eight days after being infected with the pathogen Hyaloperonospora arabidopsidis, which is closely related to crop pathogens that Jeff Dangl, University of North Carolina, Chapel Hill View Media

Highlighted cells

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The cytoskeleton (green) and DNA (purple) are highlighed in these cells by immunofluorescence. Torsten Wittmann, Scripps Research Institute View Media

The Proteasome: The Cell's Trash Processor in Action

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Our cells are constantly removing and recycling molecular waste. This video shows one way cells process their trash. View Media

Trypanosoma brucei, the cause of sleeping sickness

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Trypanosoma brucei is a single-cell parasite that causes sleeping sickness in humans. Michael Rout, Rockefeller University View Media

Drosophila

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Two adult fruit flies (Drosophila) Dr. Vicki Losick, MDI Biological Laboratory, www.mdibl.org View Media

Draper, shown in the fatbody of a Drosophila melanogaster larva

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The fly fatbody is a nutrient storage and mobilization organ akin to the mammalian liver. The engulfment receptor Draper (green) is located at the cell surface of fatbody cells. Christina McPhee and Eric Baehrecke, University of Massachusetts Medical School View Media

Brain showing hallmarks of Alzheimer's disease

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Along with blood vessels (red) and nerve cells (green), this mouse brain shows abnormal protein clumps known as plaques (blue). Alvin Gogineni, Genentech View Media

Cancer Cells Glowing from Luciferin

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The activator cancer cell culture, right, contains a chemical that causes the cells to emit light when in the presence of immune cells. Mark Sellmyer, Stanford University School of Medicine View Media

Cross section of a Drosophila melanogaster pupa lacking Draper

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In the absence of the engulfment receptor Draper, salivary gland cells (light blue) persist in the thorax of a developing Drosophila melanogaster pupa. Christina McPhee and Eric Baehrecke, University of Massachusetts Medical School View Media

Hair cells: the sound-sensing cells in the ear

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These cells get their name from the hairlike structures that extend from them into the fluid-filled tube of the inner ear. Henning Horn, Brian Burke, and Colin Stewart, Institute of Medical Biology, Agency for Science, Technology, and Research, Singapore View Media

Lily mitosis 01

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A light microscope image shows the chromosomes, stained dark blue, in a dividing cell of an African globe lily (Scadoxus katherinae). Andrew S. Bajer, University of Oregon, Eugene View Media

Nucleolus subcompartments spontaneously self-assemble 2

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The nucleolus is a small but very important protein complex located in the cell's nucleus. Nilesh Vaidya, Princeton University 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

Anglerfish ovary cross-section

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This image captures the spiral-shaped ovary of an anglerfish in cross-section. Once matured, these eggs will be released in a gelatinous, floating mass. James E. Hayden, The Wistar Institute, Philadelphia, Pa. View Media

Nucleolus subcompartments spontaneously self-assemble 1

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The nucleolus is a small but very important protein complex located in the cell's nucleus. Nilesh Vaidya, Princeton University View Media

Nucleosome

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Like a strand of white pearls, DNA wraps around an assembly of special proteins called histones (colored) to form the nucleosome, a structure responsible for regulating genes and condensing DNA strand Karolin Luger, Colorado State University View Media

Skin cell (keratinocyte)

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This normal human skin cell was treated with a growth factor that triggered the formation of specialized protein structures that enable the cell to move. Torsten Wittmann, University of California, San Francisco View Media

CRISPR

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RNA incorporated into the CRISPR surveillance complex is positioned to scan across foreign DNA. Cryo-EM density from a 3Å reconstruction is shown as a yellow mesh. NRAMM National Resource for Automated Molecular Microscopy http://nramm.nysbc.org/nramm-images/ Source: Bridget Carragher View Media

Epithelial cell migration

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High-resolution time lapse of epithelial (skin) cell migration and wound healing. It shows an image taken every 13 seconds over the course of almost 14 minutes. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

Tongue 1

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Microscopy image of tongue. One in a series of two, see image 5811 National Center for Microscopy and Imaging Research (NCMIR) 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

Supernova 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 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

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

Human endoplasmic reticulum membrane protein complex

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A 3D model of the human endoplasmic reticulum membrane protein complex (EMC) that identifies its nine essential subunits. Rebecca Voorhees, California Institute of Technology. View Media

Electrode probe on mouse Huntington's muscle cell

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Using an electrode, researchers apply an electrical pulse onto a piece of muscle tissue affected by Huntington's disease. Grigor Varuzhanyan and Andrew A. Voss, California State Polytechnic University View Media

G switch (with labels)

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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

Seeing signaling protein activation in cells 02

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Cdc42, a member of the Rho family of small guanosine triphosphatase (GTPase) proteins, regulates multiple cell functions, including motility, proliferation, apoptosis, and cell morphology. Klaus Hahn, University of North Carolina, Chapel Hill Medical School View Media