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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.

EM of yeast cell division

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Cell division is an incredibly coordinated process. Matthew West and Greg Odorizzi, University of Colorado View Media

Central dogma, illustrated (with labels and numbers for stages)

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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

Induced 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 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

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

Wild-type and mutant fruit fly ovaries

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The two large, central, round shapes are ovaries from a typical fruit fly (Drosophila melanogaster). Vladimir I. Gelfand, Feinberg School of Medicine, Northwestern University. View Media

CRISPR illustration

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This illustration shows, in simplified terms, how the CRISPR-Cas9 system can be used as a gene-editing tool. National Institute of General Medical Sciences. View Media

GFP sperm

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Fruit fly sperm cells glow bright green when they express the gene for green fluorescent protein (GFP). View Media

Life of an AIDS virus (with labels and stages)

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HIV is a retrovirus, a type of virus that carries its genetic material not as DNA but as RNA. Crabtree + Company View Media

Hippocampal neuron in culture

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Hippocampal neuron in culture. Dendrites are green, dendritic spines are red and DNA in cell's nucleus is blue. Shelley Halpain, UC San Diego 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

Mosaicism 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 Media

Cross section of a Drosophila melanogaster pupa

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This photograph shows a magnified view of a Drosophila melanogaster pupa in cross section. Compare this normal pupa to one that lacks an important receptor, shown in image 2759. Christina McPhee and Eric Baehrecke, University of Massachusetts Medical School View Media

Centromeres on human chromosomes

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Human metaphase chromosomes are visible with fluorescence in vitro hybridization (FISH). Centromeric alpha satellite DNA (green) are found in the heterochromatin at each centromere. Peter Warburton, Mount Sinai School of Medicine View Media

Genetic patchworks

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Each point in these colorful patchworks represents the correlation between two sleep-associated genes in fruit flies. Susan Harbison and Trudy Mackay, North Carolina State University View Media

Introns

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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 Media

A molecular interaction network in yeast 2

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The image visualizes a part of the yeast molecular interaction network. Keiichiro Ono, UCSD View Media

Fused, dicentric chromosomes

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This fused chromosome has two functional centromeres, shown as two sets of red and green dots. Beth A. Sullivan, Duke University View Media

Meiosis illustration (with labels)

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Meiosis is the process whereby a cell reduces its chromosomes from diploid to haploid in creating eggs or sperm. Crabtree + Company View Media

Dolly the sheep

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Scientists in Scotland were the first to clone an animal, this sheep named Dolly. She later gave birth to Bonnie, the lamb next to her. View Media

Zebrafish larva

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You are face to face with a 6-day-old zebrafish larva. What look like eyes will become nostrils, and the bulges on either side will become eyes. Oscar Ruiz and George Eisenhoffer, University of Texas MD Anderson Cancer Center, Houston View Media

Fluorescence in situ hybridization (FISH) in mouse ES cells shows DNA interactions

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Researchers used fluorescence in situ hybridization (FISH) to confirm the presence of long range DNA-DNA interactions in mouse embryonic stem cells. Kathrin Plath, University of California, Los Angeles 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