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Automated crystal screening system
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Automated crystal screening systems such as the one shown here are becoming a common feature at synchrotron and other facilities where high-throughput crystal structure determination is being carried Southeast Collaboratory for Structural Genomics View MediaMicrosporidia in roundworm 2
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Many disease-causing microbes manipulate their host’s metabolism and cells for their own ends. Keir Balla and Emily Troemel, University of California San Diego View MediaWeblike sheath covering developing egg chambers in a giant grasshopper
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The lubber grasshopper, found throughout the southern United States, is frequently used in biology classes to teach students about the respiratory system of insects. Kevin Edwards, Johny Shajahan, and Doug Whitman, Illinois State University. View MediaEarly ribbon drawing of a protein
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This ribbon drawing of a protein hand drawn and colored by researcher Jane Richardson in 1981 helped originate the ribbon representation of proteins that is now ubiquitous in molecular graphics. Jane Richardson, Duke University Medical Center View MediaMigrating pigment cells
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Pigment cells are cells that give skin its color. David Parichy, University of Washington View MediaChromosomes before crossing over
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Duplicated pair of chromosomes lined up and ready to cross over. Judith Stoffer View MediaGolgi
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The Golgi complex, also called the Golgi apparatus or, simply, the Golgi. Judith Stoffer View MediaCrab nerve cell
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Neuron from a crab showing the cell body (bottom), axon (rope-like extension), and growth cone (top right). Tina Weatherby Carvalho, University of Hawaii at Manoa View MediaClathrin-mediated endocytosis
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Endocytosis is the process by which cells are able to take up membrane and extracellular materials through the formation of a small intracellular bubble, called a vesicle. Janet Iwasa, University of Utah View MediaJellyfish, viewed with ZEISS Lightsheet Z.1 microscope
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Jellyfish are especially good models for studying the evolution of embryonic tissue layers. Despite being primitive, jellyfish have a nervous system (stained green here) and musculature (red). Helena Parra, Pompeu Fabra University, Spain View MediaCRISPR Illustration Frame 5
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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 MediaRNA strand
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Ribonucleic acid (RNA) has a sugar-phosphate backbone and the bases adenine (A), cytosine (C), guanine (G), and uracil (U). Crabtree + Company View MediaActive site of sulfite oxidase
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Sulfite oxidase is an enzyme that is essential for normal neurological development in children. John Enemark, University of Arizona View MediaSmooth muscle from mouse stem cells
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These smooth muscle cells were derived from mouse neural crest stem cells. Red indicates smooth muscle proteins, blue indicates nuclei. Deepak Srivastava, Gladstone Institutes, via CIRM View MediaInfluenza virus attaches to host membrane (with labels)
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Influenza A infects a host cell when hemagglutinin grips onto glycans on its surface. Crabtree + Company View Media3-D Architecture of a Synapse
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This image shows the structure of a synapse, or junction between two nerve cells in three dimensions. From the brain of a mouse. Anton Maximov, The Scripps Research Institute, La Jolla, CA View MediaInsulin and protein interact in pancreatic beta cells
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A large number of proteins interact with the hormone insulin as it is produced in and secreted from the beta cells of the pancreas. William E. Balch, The Scripps Research Institute View MediaHydra 05
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Hydra magnipapillata is an invertebrate animal used as a model organism to study developmental questions, for example the formation of the body axis. Hiroshi Shimizu, National Institute of Genetics in Mishima, Japan View MediaX-ray diffraction pattern from a crystallized cefotaxime-CCD-1 complex
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CCD-1 is an enzyme produced by the bacterium Clostridioides difficile that helps it resist antibiotics. Keith Hodgson, Stanford University. View MediaSTORM image of axonal cytoskeleton
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This image shows the long, branched structures (axons) of nerve cells. Xiaowei Zhuang Laboratory, Howard Hughes Medical Institute, Harvard University View MediaSeeing signaling protein activation in cells 01
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Cdc42, a member of the Rho family of small guanosine triphosphatase (GTPase) proteins, regulates multiple cell functions, including motility, proliferation, apoptosis, and cell morphology. Klaus Hahn, University of North Carolina, Chapel Hill Medical School View MediaSea urchin embryo 03
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Stereo triplet of a sea urchin embryo stained to reveal actin filaments (orange) and microtubules (blue). George von Dassow, University of Washington View MediaMovements of myosin
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Inside the fertilized egg cell of a fruit fly, we see a type of myosin (related to the protein that helps muscles contract) made to glow by attaching a fluorescent protein. Victoria Foe, University of Washington View MediaFruit fly nurse cells transporting their contents during egg development
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In many animals, the egg cell develops alongside sister cells. Adam C. Martin, Massachusetts Institute of Technology. View MediaMounting of protein crystals
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Automated methods using micromachined silicon are used at the Northeast Collaboratory for Structural Genomics to mount protein crystals for X-ray crystallography. The Northeast Collaboratory for Structural Genomics View MediaLorsch Swearing In
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Jon Lorsch at his swearing in as NIGMS director in August 2013. Also shown are Francis Collins, NIH Director, and Judith Greenberg, former NIGMS Acting Director. View MediaTelomerase illustration
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Reactivating telomerase in our cells does not appear to be a good way to extend the human lifespan. Cancer cells reactivate telomerase. Judith Stoffer View MediaAminopeptidase N from N. meningitidis
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Model of the enzyme aminopeptidase N from the human pathogen Neisseria meningitidis, which can cause meningitis epidemics. Midwest Center for Structural Genomics, PSI View MediaRSV-Infected Cell
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Viral RNA (red) in an RSV-infected cell. Eric Alonas and Philip Santangelo, Georgia Institute of Technology and Emory University View MediaH1 histamine receptor
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The receptor is shown bound to an inverse agonist, doxepin. Raymond Stevens, The Scripps Research Institute View MediaCulex 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 MediaPulsating 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 MediaComputer algorithm
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This computer algorithm plots all feasible small carbon-based molecules as though they were cities on a map and identifies huge, unexplored spaces that may help fuel research into new drug therapies. Aaron Virshup, Julia Contreras-Garcia, Peter Wipf, Weitao Yang and David Beratan, University of Pittsburgh Center for Chemical Methodologies and Library Development View MediaHydra 03
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Hydra magnipapillata is an invertebrate animal used as a model organism to study developmental questions, for example the formation of the body axis. Hiroshi Shimizu, National Institute of Genetics in Mishima, Japan View MediaStaphylococcus aureus in the porous coating of a femoral hip stem
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Staphylococcus aureus bacteria (blue) on the porous coating of a femoral hip stem used in hip replacement surgery. Paul Stoodley, The Ohio State University. View MediaRepairing 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 MediaKupffer cell residing in the liver
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Kupffer cells appear in the liver during the early stages of mammalian development and stay put throughout life to protect liver cells, clean up old red blood cells, and regulate iron levels. Thomas Deerinck, National Center for Microscopy and Imaging Research, University of California, San Diego. View MediaChromatin in human tenocyte
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The nucleus of a degenerating human tendon cell, also known as a tenocyte. It has been color-coded based on the density of chromatin—a substance made up of DNA and proteins. Melike Lakadamyali, Perelman School of Medicine at the University of Pennsylvania. View MediaGenetically 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 MediaMouse cerebellum
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The cerebellum is the brain's locomotion control center. Found at the base of your brain, the cerebellum is a single layer of tissue with deep folds like an accordion. National Center for Microscopy and Imaging Research (NCMIR) View MediaSea urchin embryo 01
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Stereo triplet of a sea urchin embryo stained to reveal actin filaments (orange) and microtubules (blue). George von Dassow, University of Washington View MediaMultivesicular bodies containing intralumenal vesicles assemble at the vacuole 2
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Collecting and transporting cellular waste and sorting it into recylable and nonrecylable pieces is a complex business in the cell. Matthew West and Greg Odorizzi, University of Colorado View MediaBond types
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Ionic and covalent bonds hold molecules, like sodium chloride and chlorine gas, together. Hydrogen bonds among molecules, notably involving water, also play an important role in biology. Crabtree + Company View MediaChromosome inside nucleus
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The long, stringy DNA that makes up genes is spooled within chromosomes inside the nucleus of a cell. Crabtree + Company View MediaCryo-ET cell cross-section visualizing insulin vesicles
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On the left, a cross-section slice of a rat pancreas cell captured using cryo-electron tomography (cryo-ET). On the right, a color-coded, 3D version of the image highlighting cell structures. Xianjun Zhang, University of Southern California. View MediaBody toxins
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Body organs such as the liver and kidneys process chemicals and toxins. These "target" organs are susceptible to damage caused by these substances. Crabtree + Company View MediaDisrupted and restored vasculature development in frog embryos
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Disassembly of vasculature and reassembly after addition and then washout of 250 µM TBZ in kdr:GFP frogs. Hye Ji Cha, University of Texas at Austin View Media