National Institute of
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.
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
Arabidopsis leaf injected with a pathogen
2780
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
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
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
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
Life of an AIDS virus
2513
HIV is a retrovirus, a type of virus that carries its genetic material not as DNA but as RNA. Crabtree + Company 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
Induced stem cells from adult skin 03
2605
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
Lily mitosis 04
1014
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 1
5751
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
Early development in Arabidopsis
2733
Early on, this Arabidopsis plant embryo picks sides: While one end will form the shoot, the other will take root underground. Zachery R. Smith, Jeff Long lab at the Salk Institute for Biological Studies 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
Telomeres on outer edge of nucleus during cell division
3484
New research shows telomeres moving to the outer edge of the nucleus after cell division, suggesting these caps that protect chromosomes also may play a role in organizing DNA. Laure Crabbe, Jamie Kasuboski and James Fitzpatrick, Salk Institute for Biological Studies 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
Dolly the sheep
2690
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
A chromosome goes missing in anaphase
5766
Anaphase is the critical step during mitosis when sister chromosomes are disjoined and directed to opposite spindle poles, ensuring equal distribution of the genome during cell division. View Media
DNA and actin in cultured fibroblast cells
3670
DNA (blue) and actin (red) in cultured fibroblast cells. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) 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
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
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
Planting roots
2329
At the root tips of the mustard plant Arabidopsis thaliana (red), two proteins work together to control the uptake of water and nutrients. Philip Benfey, Duke University 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
Central dogma, illustrated
2547
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
CRISPR Illustration
7036
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
Dicer generates microRNAs (with labels)
2557
The enzyme Dicer generates microRNAs by chopping larger RNA molecules into tiny Velcro®-like pieces. MicroRNAs stick to mRNA molecules and prevent the mRNAs from being made into proteins. 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
Nucleotides make up DNA
2541
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
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
Cell division phases in Xenopus frog cells
3442
These images show three stages of cell division in Xenopus XL177 cells, which are derived from tadpole epithelial cells. They are (from top): metaphase, anaphase and telophase. Claire Walczak, who took them while working as a postdoc in the laboratory of Timothy Mitchison 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
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
Chromosomes after crossing over
1314
Duplicated pair of chromosomes have exchanged material. Judith Stoffer View Media
CRISPR Illustration Frame 5
6489
This illustration shows, in simplified terms, how the CRISPR-Cas9 system can be used as a gene-editing tool. This is the fifthframe in a series of five. 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
From DNA to Protein
2509
Nucleotides in DNA are copied into RNA, where they are read three at a time to encode the amino acids in a protein. Many parts of a protein fold as the amino acids are strung together. Crabtree + Company 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
Mature, flowering Arabidopsis
2779
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
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
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
Pollen grains: male germ cells in plants and a cause of seasonal allergies
3609
Those of us who get sneezy and itchy-eyed every spring or fall may have pollen grains, like those shown here, to blame. Edna, Gil, and Amit Cukierman, Fox Chase Cancer Center, Philadelphia, Pa. View Media
Sponge
2728
Many of today's medicines come from products found in nature, such as this sponge found off the coast of Palau in the Pacific Ocean. Phil Baran, Scripps Research Institute View Media
Highlighted cells
2429
The cytoskeleton (green) and DNA (purple) are highlighed in these cells by immunofluorescence. Torsten Wittmann, Scripps Research Institute View Media
Lily mitosis 08
1021
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
Glowing bacteria make a pretty postcard
3492
This tropical scene, reminiscent of a postcard from Key West, is actually a petri dish containing an artistic arrangement of genetically engineered bacteria. Nathan C. Shaner, The Scintillon Institute 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
DNA replication illustration (with labels)
2544
During DNA replication, each strand of the original molecule acts as a template for the synthesis of a new, complementary DNA strand. Crabtree + Company 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 Arabidopsis flower buds
3743
Flower development is a carefully orchestrated, genetically programmed process that ensures that the male (stamen) and female (pistil) organs form in the right place and at the right time in the flowe Nathanaël Prunet, Caltech View Media
Life of an AIDS virus (with labels)
2514
HIV is a retrovirus, a type of virus that carries its genetic material not as DNA but as RNA. Crabtree + Company View Media
Endoplasmic reticulum abnormalities 2
6774
Human cells with the gene that codes for the protein FIT2 deleted. After an experimental intervention, they are expressing a nonfunctional version of FIT2, shown in green. Michel Becuwe, Harvard University. View Media
