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.

Chromosomes after crossing over

1314

Duplicated pair of chromosomes have exchanged material. Judith Stoffer 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

Fruit fly ovary_2

3656

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, University of California, Santa Barbara 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

Dicty fruit

2684

Dictyostelium discoideum is a microscopic amoeba. A group of 100,000 form a mound as big as a grain of sand. Featured in The New Genetics. View Media

Retroviruses as fossils

2709

DNA doesn't leave a fossil record in stone, the way bones do. Instead, the DNA code itself holds the best evidence for organisms' genetic history. Emily Harrington, science illustrator View Media

Host infection stimulates antibiotic resistance

5764

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

Meiosis illustration (with labels)

2546

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

Haplotypes

2566

Haplotypes are combinations of gene variants that are likely to be inherited together within the same chromosomal region. Crabtree + Company View Media

Telomeres

2626

The 46 human chromosomes are shown in blue, with the telomeres appearing as white pinpoints. Hesed Padilla-Nash and Thomas Ried, the National Cancer Institute, a part of NIH 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

Disease-resistant Arabidopsis leaf

2781

This is a magnified view of an Arabidopsis thaliana leaf a few days after being exposed to the pathogen Hyaloperonospora arabidopsidis. Jeff Dangl, University of North Carolina, Chapel Hill View Media

Dividing cell in metaphase

3445

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 Media

Painted chromosomes

2764

Like a paint-by-numbers picture, painted probes tint individual human chromosomes by targeting specific DNA sequences. Beth A. Sullivan, Duke University View Media

Histones in chromatin (with labels)

2561

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

RNA strand (with labels)

2555

Ribonucleic acid (RNA) has a sugar-phosphate backbone and the bases adenine (A), cytosine (C), guanine (G), and uracil (U). Featured in The New Genetics. Crabtree + Company 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

Lily mitosis 06

1016

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

Lily mitosis 07

1017

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

Alternative splicing (with labels)

2553

Arranging exons in different patterns, called alternative splicing, enables cells to make different proteins from a single gene. Featured in The New Genetics. 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

Induced stem cells from adult skin 01

2603

These cells are induced stem cells made from human adult skin cells that were genetically reprogrammed to mimic embryonic stem cells. James Thomson, University of Wisconsin-Madison View Media

Chromosomes before crossing over

1315

Duplicated pair of chromosomes lined up and ready to cross over. Judith Stoffer View Media

CRISPR Illustration Frame 4

6488

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

Lily mitosis 11

1011

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

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

Alternative splicing

2552

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

Endoplasmic reticulum abnormalities

6773

Human cells with the gene that codes for the protein FIT2 deleted. Green indicates an endoplasmic reticulum (ER) resident protein. Michel Becuwe, Harvard 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

Xenopus laevis egg

2753

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

Gene silencing

2318

Pretty in pink, the enzyme histone deacetylase (HDA6) stands out against a background of blue-tinted DNA in the nucleus of an Arabidopsis plant cell. Olga Pontes and Craig Pikaard, Washington University View Media

Lily mitosis 05

1015

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

Genetically identical mycobacteria respond differently to antibiotic 2

5752

Antibiotic resistance in microbes is a serious health concern. So researchers have turned their attention to how bacteria undo the action of some antibiotics. Bree Aldridge, Tufts University View Media

A molecular interaction network in yeast 2

3732

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

Trypanosoma brucei, the cause of sleeping sickness

3765

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

Zebrafish embryo

3644

Just 22 hours after fertilization, this zebrafish embryo is already taking shape. By 36 hours, all of the major organs will have started to form. Philipp Keller, Bill Lemon, Yinan Wan, and Kristin Branson, Janelia Farm Research Campus, Howard Hughes Medical Institute, Ashburn, Va. 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

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

Genetic imprinting in Arabidopsis

2418

This delicate, birdlike projection is an immature seed of the Arabidopsis plant. The part in blue shows the cell that gives rise to the endosperm, the tissue that nourishes the embryo. Robert Fischer, University of California, Berkeley 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

Induced stem cells from adult skin 02

2604

These cells are induced stem cells made from human adult skin cells that were genetically reprogrammed to mimic embryonic stem cells. James Thomson, University of Wisconsin-Madison View Media

A dynamic model of the DNA helicase protein complex

3750

This short video shows a model of the DNA helicase in yeast. This DNA helicase has 11 proteins that work together to unwind DNA during the process of copying it, called DNA replication. Huilin Li, Stony Brook University View Media

Meiosis illustration

2545

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

Fused, dicentric chromosomes

2763

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

CRISPR Illustration Frame 2

6486

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

Haplotypes (with labels)

2567

Haplotypes are combinations of gene variants that are likely to be inherited together within the same chromosomal region. Crabtree + Company View Media

Nucleolus subcompartments spontaneously self-assemble 3

3792

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