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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.

Endoplasmic reticulum abnormalities 2

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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

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

Histones in chromatin

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

Lily mitosis 11

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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

Chromosomes after crossing over

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Duplicated pair of chromosomes have exchanged material. Judith Stoffer 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

Group of Culex quinquefasciatus mosquito larvae

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Mosquito larvae with genes edited by CRISPR. Valentino Gantz, University of California, San Diego. View Media

Central dogma, illustrated (with labels)

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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

Microscopy image of bird-and-flower DNA origami

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

Chromosomes before crossing over

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

DNA replication illustration

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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

Life of an AIDS virus (with labels)

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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

RNA interference (with labels)

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

TFIID complex binds DNA to start gene transcription

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

Mitotic cell awaits chromosome alignment

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

Automated Worm Sorter - 4

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Georgia Tech associate professor Hang Lu holds a microfluidic chip that is part of a system that uses artificial intelligence and cutting-edge image processing to automatically examine large number of Georgia Tech/Gary Meek View Media

Life of an AIDS virus

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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

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

Cas4 nuclease protein structure

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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

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

Katanin protein regulates anaphase

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

Disease-susceptible Arabidopsis leaf

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This is a magnified view of an Arabidopsis thaliana leaf after several days of infection with the pathogen Hyaloperonospora arabidopsidis. Jeff Dangl, University of North Carolina, Chapel Hill View Media

Bottles of warfarin

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In 2007, the FDA modified warfarin's label to indicate that genetic makeup may affect patient response to the drug. The widely used blood thinner is sold under the brand name Coumadin®. Alisa Machalek, NIGMS/NIH View Media

Pulsating response to stress in bacteria

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By attaching fluorescent proteins to the genetic circuit responsible for B. subtilis's stress response, researchers can observe the cells' pulses as green flashes. Michael Elowitz, Caltech University View Media

Xenopus laevis embryos

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Xenopus laevis, the African clawed frog, has long been used as a model organism for studying embryonic development. The frog embryo on the left lacks the developmental factor Sizzled. Michael Klymkowsky, University of Colorado, Boulder View Media

Fruit fly spermatids

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Developing spermatids (precursors of mature sperm cells) begin as small, round cells and mature into long-tailed, tadpole-shaped ones. Lacramioara Fabian, The Hospital for Sick Children, Toronto, Canada View Media

Mosaicism in C. elegans (Black 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

A molecular interaction network in yeast 1

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

A molecular interaction network in yeast 3

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

A multicolored fish scale 1

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Each of the 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

Recombinant DNA

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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

Histones in chromatin (with labels)

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

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

Dicty fruit

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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

Induced stem cells from adult skin 04

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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

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

Trp_RS - tryptophanyl tRNA-synthetase family of enzymes

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This image represents the structure of TrpRS, a novel member of the tryptophanyl tRNA-synthetase family of enzymes. View Media

Culex quinquefasciatus mosquito larva

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A mosquito larva with genes edited by CRISPR. The red-orange glow is a fluorescent protein used to track the edits. Valentino Gantz, University of California, San Diego. View Media

From DNA to Protein (labeled)

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The genetic code in DNA is transcribed into RNA, which is translated into proteins with specific sequences. Crabtree + Company View Media

Lily mitosis 13

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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

Disease-resistant Arabidopsis leaf

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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

Nucleosome

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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

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

Planting roots

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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

Introduction to Genome Editing Using CRISPR/Cas9

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Genome editing using CRISPR/Cas9 is a rapidly expanding field of scientific research with emerging applications in disease treatment, medical therapeutics and bioenergy, just to name a few. Janet Iwasa 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

Nucleotides make up DNA (with labels)

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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

Genetically identical mycobacteria respond differently to antibiotic 2

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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

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