Switch to Gallery View

Image and Video Gallery

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.

Epigenetic code (with labels)

2563

The "epigenetic code" controls gene activity with chemical tags that mark DNA (purple diamonds) and the "tails" of histone proteins (purple triangles). Crabtree + Company View Media

Chromosomes after crossing over

1314

Duplicated pair of chromosomes have exchanged material. Judith Stoffer View Media

Dynamic cryo-EM model of the human transcription preinitiation complex

5730

Gene transcription is a process by which information encoded in DNA is transcribed into RNA. Eva Nogales, Berkeley Lab View Media

Circadian rhythms and the SCN

6613

Circadian rhythms are physical, mental, and behavioral changes that follow a 24-hour cycle. NIGMS View Media

Dividing cells showing chromosomes and cell skeleton

3631

This pig cell is in the process of dividing. The chromosomes (purple) have already replicated and the duplicates are being pulled apart by fibers of the cell skeleton known as microtubules (green). Nasser Rusan, National Heart, Lung, and Blood Institute, National Institutes of Health View Media

Cas4 nuclease protein structure

3720

This wreath represents the molecular structure of a protein, Cas4, which is part of a system, known as CRISPR, that bacteria use to protect themselves against viral invaders. Fred Dyda, NIDDK View Media

Katanin protein regulates anaphase

2594

The microtubule severing protein, katanin, localizes to chromosomes and regulates anaphase A in mitosis. David Sharp, Albert Einstein College of Medicine View Media

Nucleolus subcompartments spontaneously self-assemble 2

3791

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

Ciclo circadiano de un adolescente típico

6612

Los ritmos circadianos son cambios físicos, mentales y conductuales que siguen un ciclo de 24 horas. NIGMS View Media

Snowflake DNA origami

3724

An atomic force microscopy image shows DNA folded into an intricate, computer-designed structure. The image is featured on Biomedical Beat blog post Cool Images: A Holiday-Themed Collection. Hao Yan, Arizona State University View Media

Nucleosome

2741

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

RNA interference

2558

RNA interference or RNAi is a gene-silencing process in which double-stranded RNAs trigger the destruction of specific RNAs. Crabtree + Company View Media

CRISPR Illustration Frame 1

6465

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

Introns (with labels)

2551

Genes are often interrupted by stretches of DNA (introns, blue) that do not contain instructions for making a protein. Crabtree + Company View Media

Precise development in the fruit fly embryo

2593

This 2-hour-old fly embryo already has a blueprint for its formation, and the process for following it is so precise that the difference of just a few key molecules can change the plans. Thomas Gregor, Princeton University View Media

Recombinant DNA

2564

To splice a human gene into a plasmid, scientists take the plasmid out of an E. coli bacterium, cut the plasmid with a restriction enzyme, and splice in human DNA. Crabtree + Company View Media

Two-headed Xenopus laevis tadpole

2755

Xenopus laevis, the African clawed frog, has long been used as a research organism for studying embryonic development. Michael Klymkowsky, University of Colorado, Boulder View Media

Average teen circadian cycle

6611

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 Media

Mosaicism in C. elegans (White Background)

6534

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

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

3296

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

Lily mitosis 10

1010

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

A molecular interaction network in yeast 3

3733

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

Developing zebrafish fin

3598

Originally from the waters of India, Nepal, and neighboring countries, zebrafish can now be found swimming in science labs (and home aquariums) throughout the world. Jessica Plavicki View Media

Fly by night

2417

This fruit fly expresses green fluorescent protein (GFP) in the same pattern as the period gene, a gene that regulates circadian rhythm and is expressed in all sensory neurons on the surface of the fl Jay Hirsh, University of Virginia View Media

TFIID complex binds DNA to start gene transcription

3766

Gene transcription is a process by which the genetic information encoded in DNA is transcribed into RNA. Eva Nogales, Berkeley Lab View Media

A multicolored fish scale 2

3783

Each of the tiny colored specs in this image is a cell on the surface of a fish scale. Chen-Hui Chen and Kenneth Poss, Duke University View Media

Chromosome inside nucleus (with labels)

2540

The long, stringy DNA that makes up genes is spooled within chromosomes inside the nucleus of a cell. Crabtree + Company View Media

RNA interference (with labels)

2559

RNA interference or RNAi is a gene-silencing process in which double-stranded RNAs trigger the destruction of specific RNAs. Crabtree + Company View Media

Apoptosis reversed

3486

Two healthy cells (bottom, left) enter into apoptosis (bottom, center) but spring back to life after a fatal toxin is removed (bottom, right; top). Hogan Tang of the Denise Montell Lab, Johns Hopkins University School of Medicine View Media

Microscopy image of bird-and-flower DNA origami

3690

An atomic force microscopy image shows DNA folded into an intricate, computer-designed structure. Hao Yan, Arizona State University View Media

Epigenetic code

2562

The "epigenetic code" controls gene activity with chemical tags that mark DNA (purple diamonds) and the "tails" of histone proteins (purple triangles). Crabtree + Company View Media

Chromosome inside nucleus

2539

The long, stringy DNA that makes up genes is spooled within chromosomes inside the nucleus of a cell. Crabtree + Company View Media

Interphase in Xenopus frog cells

3443

These images show frog cells in interphase. The cells are Xenopus XL177 cells, which are derived from tadpole epithelial cells. The microtubules are green and the chromosomes are blue. Claire Walczak, who took them while working as a postdoc in the laboratory of Timothy Mitchison. View Media

Chromosome fiber 01

2475

This microscopic image shows a chromatin fiber--a DNA molecule bound to naturally occurring proteins. Marc Green and Susan Forsburg, University of Southern California View Media

Wild-type and mutant fruit fly ovaries

6806

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

Lily mitosis 13

1019

A light microscope image of cells 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

Birth of a yeast cell

3614

Yeast make bread, beer, and wine. And like us, yeast can reproduce sexually. A mother and father cell fuse and create one large cell that contains four offspring. Juergen Berger, Max Planck Institute for Developmental Biology, and Maria Langegger, Friedrich Miescher Laboratory of the Max Planck Society, Germany View Media

Lily mitosis 02

1012

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

Fruit fly ovaries

6807

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

Mapping human genetic variation

2443

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

RSV-Infected Cell

3567

Viral RNA (red) in an RSV-infected cell. Eric Alonas and Philip Santangelo, Georgia Institute of Technology and Emory University View Media

Arabidopsis Thaliana: Flowers Spring to Life

6503

This image capture shows how a single gene, STM, plays a starring role in plant development. Nathanaёl Prunet NIH Support: National Institute of General Medical Sciences View Media

Nucleotides make up DNA (with labels)

2542

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

Nucleolus subcompartments spontaneously self-assemble 4

3793

What looks a little like distant planets with some mysterious surface features are actually assemblies of proteins normally found in the cell's nucleolus, a small but very important protein complex lo Nilesh Vaidya, Princeton University View Media

HIV enzyme

6999

These images model the molecular structures of three enzymes with critical roles in the life cycle of the human immunodeficiency virus (HIV). Amy Wu and Christine Zardecki, RCSB Protein Data Bank. View Media

Mitotic cell awaits chromosome alignment

5765

During mitosis, spindle microtubules (red) attach to chromosome pairs (blue), directing them to the spindle equator. View Media

Fruit fly ovary

3607

A fruit fly ovary, shown here, contains as many as 20 eggs. Fruit flies are not merely tiny insects that buzz around overripe fruit—they are a venerable scientific tool. Denise Montell, Johns Hopkins University and University of California, Santa Barbara View Media

Zinc finger

2426

The structure of a gene-regulating zinc finger protein bound to DNA. Jeremy M. Berg, National Institute of General Medical Sciences View Media

Histones in chromatin

2560

Histone proteins loop together with double-stranded DNA to form a structure that resembles beads on a string. Crabtree + Company View Media

Introns

2550

Genes are often interrupted by stretches of DNA (introns, blue) that do not contain instructions for making a protein. Crabtree + Company View Media