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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.

HIV Infected Cell

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The human immunodeficiency virus (HIV), shown here as tiny purple spheres, causes the disease known as AIDS (for acquired immunodeficiency syndrome). Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media

Floral pattern in a mixture of two bacterial species, Acinetobacter baylyi and Escherichia coli, grown on a semi-solid agar for 72 hour

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Floral pattern emerging as two bacterial species, motile Acinetobacter baylyi and non-motile Escherichia coli (green), are grown together for 72 hours on 0.5% agar surface from a small i L. Xiong et al, eLife 2020;9: e48885 View Media

Centrioles anchor cilia in planaria

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Centrioles (green) anchor cilia (red), which project on the surface of pharynx cells of the freshwater planarian Schmidtea mediterranea. Juliette Azimzadeh, University of California, San Francisco View Media

Endoplasmic reticulum

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Fluorescent markers show the interconnected web of tubes and compartments in the endoplasmic reticulum. The protein atlastin helps build and maintain this critical part of cells. Andrea Daga, Eugenio Medea Scientific Institute (Conegliano, Italy) View Media

Beta-galactosidase montage showing cryo-EM improvement--transparent 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

Mapping human genetic variation

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This map paints a colorful portrait of human genetic variation around the world. Noah Rosenberg and Martin Soave, University of Michigan View Media

Regeneration of Mouse Ears

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Normal mice, like the B6 breed pictured on the left, develop scars when their ears are pierced. Ellen Heber-Katz, The Wistar Institute 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

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

Nucleus and rough ER

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The nucleus contains the DNA of eukaryotic cells. Judith Stoffer 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

Myotonic dystrophy type 2 genetic defect

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Scientists revealed a detailed image of the genetic defect that causes myotonic dystrophy type 2 and used that information to design drug candidates to counteract the disease. Matthew Disney, Scripps Research Institute and Ilyas Yildirim, Northwestern University 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

Carbon 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 Media

Mature, flowering Arabidopsis

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This is an adult flowering Arabidopsis thaliana plant with the inbred designation L-er. Arabidopsis is the most widely used model organism for researchers who study plant genetics. Jeff Dangl, University of North Carolina, Chapel Hill View Media

Mitochondrion from insect flight muscle

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This is a tomographic reconstruction of a mitochondrion from an insect flight muscle. National Center for Microscopy and Imaging Research 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

Protein kinases as cancer chemotherapy targets

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Protein kinases—enzymes that add phosphate groups to molecules—are cancer chemotherapy targets because they play significant roles in almost all aspects of cell function, are tightly regulated, and co Amy Wu and Christine Zardecki, RCSB Protein Data Bank. View Media

HIV, the AIDS virus, infecting a human cell

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This human T cell (blue) is under attack by HIV (yellow), the virus that causes AIDS. Seth Pincus, Elizabeth Fischer, and Austin Athman, National Institute of Allergy and Infectious Diseases, National Institutes of Health View Media

Transmission electron microscopy showing cross-section of the node of Ranvier

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Nodes of Ranvier are short gaps in the myelin sheath surrounding myelinated nerve cells (axons). Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View Media

DNA replication origin recognition complex (ORC)

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A study published in March 2012 used cryo-electron microscopy to determine the structure of the DNA replication origin recognition complex (ORC), a semi-circular, protein complex (yellow) that recogni Huilin Li, Brookhaven National Laboratory View Media

Arachnoidiscus diatom

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An Arachnoidiscus diatom with a diameter of 190µm. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

Lily mitosis 10

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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

Sleep and the fly brain

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In the top snapshots, the brain of a sleep-deprived fruit fly glows orange, marking high concentrations of a synaptic protein called Bruchpilot (BRP) involved in communication between neurons. Chiara Cirelli, University of Wisconsin-Madison View Media

Cysteine dioxygenase from mouse

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Model of the mammalian iron enzyme cysteine dioxygenase from a mouse. Center for Eukaryotic Structural Genomics, PSI View Media

Glycoproteins

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About half of all human proteins include chains of sugar molecules that are critical for the proteins to function properly. Appears in the NIGMS booklet Inside the Cell. Judith Stoffer View Media

Bioluminescent imaging in adult zebrafish - 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

Endothelial cell

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This image shows two components of the cytoskeleton, microtubules (green) and actin filaments (red), in an endothelial cell derived from a cow lung. Tina Weatherby Carvalho, University of Hawaii at Manoa View Media

Molecules blocking Huntington's protein production

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The molecules that glow blue in these cultured cells prevent the expression of the mutant proteins that cause Huntington's disease. Jiaxin Hu, David W. Dodd and Robert H. E. Hudson, UT Southwestern Medical Center 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

HeLa cells

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Scanning electron micrograph of just-divided HeLa cells. Zeiss Merlin HR-SEM. National Center for Microscopy and Imaging Research View Media

Axolotl

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An axolotl—a type of salamander—that has been genetically modified so that its developing nervous system glows purple and its Schwann cell nuclei appear light blue. Prayag Murawala, MDI Biological Laboratory and Hannover Medical School. 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

Vimentin in a quail embryo

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Confocal image showing high levels of the protein vimentin (white) at the edge zone of a quail embryo. Cell nuclei are labeled green. Andrés Garcia, Georgia Tech View Media

Proteins related to myotonic dystrophy

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Myotonic dystrophy is thought to be caused by the binding of a protein called Mbnl1 to abnormal RNA repeats. Manuel Ares, University of California, Santa Cruz View Media

Cryo-EM reveals how the HIV capsid attaches to a human protein to evade immune detection

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The illustration shows the capsid of human immunodeficiency virus (HIV) whose molecular features were resolved with cryo-electron microscopy (cryo-EM). Juan R. Perilla, University of Illinois at Urbana-Champaign View Media

Protein folding video

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Proteins are long chains of amino acids. Each protein has a unique amino acid sequence. It is still a mystery how a protein folds into the proper shape based on its sequence. Theoretical and Computational Biophysics Group View Media

RNA strand

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Ribonucleic acid (RNA) has a sugar-phosphate backbone and the bases adenine (A), cytosine (C), guanine (G), and uracil (U). Crabtree + Company View Media

Alternative splicing

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Arranging exons in different patterns, called alternative splicing, enables cells to make different proteins from a single gene. Crabtree + Company View Media

Mouse brain 1

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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

Anti-tumor drug ecteinascidin 743 (ET-743) with hydrogens 04

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Ecteinascidin 743 (ET-743, brand name Yondelis), was discovered and isolated from a sea squirt, Ecteinascidia turbinata, by NIGMS grantee Kenneth Rinehart at the University of Illinois. Timothy Jamison, Massachusetts Institute of Technology 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

Drosophila

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

Dynamin structure

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When a molecule arrives at a cell's outer membrane, the membrane creates a pouch around the molecule that protrudes inward. Josh Chappie, National Institute of Diabetes and Digestive and Kidney Diseases, NIH View Media

Pathways: The Fascinating Cells of Research Organisms

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Learn how research organisms, such as fruit flies and mice, can help us understand and treat human diseases. National Institute of General Medical Sciences View Media

Natcher Building 05

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NIGMS staff are located in the Natcher Building on the NIH campus. Alisa Machalek, National Institute of General Medical Sciences View Media

Host infection stimulates antibiotic resistance

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This illustration shows pathogenic bacteria behave like a Trojan horse: switching from antibiotic susceptibility to resistance during infection. View Media

Trigonium diatom

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A Trigonium diatom imaged by a quantitative orientation-independent differential interference contrast (OI-DIC) microscope. Michael Shribak, Marine Biological Laboratory/University of Chicago. View Media

O2 reacting with a flavin-dependent enzyme

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Department of Biological Chemistry, University of Michigan View Media