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Precisely Delivering Chemical Cargo to Cells
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Moving protein or other molecules to specific cells to treat or examine them has been a major biological challenge. Nature Nanotechnology View MediaCircadian rhythm neurons in the fruit fly brain
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Some nerve cells (neurons) in the brain keep track of the daily cycle. This time-keeping mechanism, called the circadian clock, is found in all animals including us. Justin Blau, New York University View MediaCell-like compartments emerging from scrambled frog eggs
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Cell-like compartments spontaneously emerge from scrambled frog eggs, with nuclei (blue) from frog sperm. Endoplasmic reticulum (red) and microtubules (green) are also visible. Xianrui Cheng, Stanford University School of Medicine. View MediaCalling Cards in a mouse brain
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The green spots in this mouse brain are cells labeled with Calling Cards, a technology that records molecular events in brain cells as they mature. Allen Yen, Lab of Joseph Dougherty, Washington University School of Medicine in St. Louis. View MediaTime-lapse video of floral pattern in a mixture of two bacterial species, Acinetobacter baylyi and Escherichia coli, grown on a semi-solid agar for 24 hours
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This time-lapse video shows the emergence of a flower-like pattern in a mixture of two bacterial species, motile Acinetobacter baylyi and non-motile Escherichia coli (green), that are gr L. Xiong et al, eLife 2020;9: e48885 View MediaMagnetic Janus particle activating a T cell
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A Janus particle being used to activate a T cell, a type of immune cell. Yan Yu, Indiana University, Bloomington. View MediaMicrotubules in hippocampal neurons
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Microtubules (magenta) in neurons of the hippocampus, a part of the brain involved in learning and memory. Microtubules are strong, hollow fibers that provide structural support to cells. Melike Lakadamyali, Perelman School of Medicine at the University of Pennsylvania. View MediaLysosomes
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Lysosomes have powerful enzymes and acids to digest and recycle cell materials. Judith Stoffer View MediaQuorum-sensing inhibitor limits bacterial growth
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To simulate the consequences of disrupting bacterial cell-to-cell communication, called quorum sensing, in the crypts (small chambers within the colon), the researchers experimented with an inhibitor Minyoung Kevin Kim and Bonnie Bassler, Princeton University View MediaKinesin moves cellular cargo
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A protein called kinesin (blue) is in charge of moving cargo around inside cells and helping them divide. Charles Sindelar, Yale University View MediaBacteriophage P22 capsid, detail
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Detail of a subunit of the capsid, or outer cover, of bacteriophage P22, a virus that infects the Salmonella bacteria. Dr. Wah Chiu, Baylor College of Medicine View MediaLily mitosis 01
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A light microscope image shows the chromosomes, stained dark blue, in a dividing cell of an African globe lily (Scadoxus katherinae). Andrew S. Bajer, University of Oregon, Eugene View MediaARTS triggers apoptosis
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Cell showing overproduction of the ARTS protein (red). ARTS triggers apoptosis, as shown by the activation of caspase-3 (green) a key tool in the cell's destruction. The nucleus is shown in blue. Hermann Steller, Rockefeller University View MediaNucleosome
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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 MediaMouse retina
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What looks like the gossamer wings of a butterfly is actually the retina of a mouse, delicately snipped to lay flat and sparkling with fluorescent molecules. Tom Deerinck and Keunyoung (“Christine”) Kim, NCMIR View MediaSalivary gland in the developing fruit fly
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For fruit flies, the salivary gland is used to secrete materials for making the pupal case, the protective enclosure in which a larva transforms into an adult fly. Richard Fehon, University of Chicago View MediaA Bacillus subtilis biofilm grown in a Petri dish
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Bacterial biofilms are tightly knit communities of bacterial cells growing on, for example, solid surfaces, such as in water pipes or on teeth. Gürol Süel, UCSD View MediaPollen grains: male germ cells in plants and a cause of seasonal allergies
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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 MediaTrigonium diatom
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A Trigonium diatom imaged by a quantitative orientation-independent differential interference contrast (OI-DIC) microscope. Michael Shribak, Marine Biological Laboratory/University of Chicago. View MediaArabidopsis leaf injected with a pathogen
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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 MediaCryo-ET cross-section of the Golgi apparatus
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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 3D, color-coded version of the image highlighting cell structures. Xianjun Zhang, University of Southern California. View MediaNuclear Lamina – Three Views
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Three views of the entire nuclear lamina of a HeLa cell produced by tilted light sheet 3D single-molecule super-resolution imaging using a platform termed TILT3D. Anna-Karin Gustavsson, Ph.D. View MediaFruit fly ovary
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In this image of a stained fruit fly ovary, the ovary is packed with immature eggs (with DNA stained blue). The cytoskeleton (in pink) is a collection of fibers that gives a cell shape and support. Crystal D. Rogers, Ph.D., University of California, Davis, School of Veterinary Medicine; and Mariano A. Loza-Coll, Ph.D., California State University, Northridge. View MediaLily mitosis 02
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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 MediaHow a microtubule builds and deconstructs
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A microtubule, part of the cell's skeleton, builds and deconstructs. View MediaPolarized cells- 01
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Cells move forward with lamellipodia and filopodia supported by networks and bundles of actin filaments. Proper, controlled cell movement is a complex process. Rong Li and Praveen Suraneni, Stowers Institute for Medical Research View MediaHIV Infected Cell
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The human immunodeficiency virus (HIV), shown here as tiny purple spheres, causes the disease known as AIDS (for acquired immunodeficiency syndrome). Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View MediaGenetic mosaicism in fruit flies
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Fat tissue from the abdomen of a genetically mosaic adult fruit fly. Genetic mosaicism means that the fly has cells with different genotypes even though it formed from a single zygote. Akhila Rajan, Fred Hutchinson Cancer Center View MediaFruit fly ovary_2
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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 MediaFused, 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 MediaMouse cerebellum close-up
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The cerebellum is the brain's locomotion control center. Every time you shoot a basketball, tie your shoe or chop an onion, your cerebellum fires into action. National Center for Microscopy and Imaging Research (NCMIR) View MediaNCMIR Intestine-1
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The small intestine is where most of our nutrients from the food we eat are absorbed into the bloodstream. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View MediaNuclear Lamina
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The 3D single-molecule super-resolution reconstruction of the entire nuclear lamina in a HeLa cell was acquired using the TILT3D platform. Anna-Karin Gustavsson, Ph.D. View MediaLarvae from the parasitic worm that causes schistosomiasis
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The parasitic worm that causes schistosomiasis hatches in water and grows up in a freshwater snail, as shown here. Bo Wang and Phillip A. Newmark, University of Illinois at Urbana-Champaign, 2013 FASEB BioArt winner View MediaTransmission electron microscopy of myelinated axons with ECM between the axons
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The extracellular matrix (ECM) is most prevalent in connective tissues but also is present between the stems (axons) of nerve cells, as shown here. Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR) View MediaDrugs enter skin
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Drugs enter different layers of skin via intramuscular, subcutaneous, or transdermal delivery methods. See image 2532 for a labeled version of this illustration. Crabtree + Company View MediaTracking embryonic zebrafish cells
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To better understand cell movements in developing embryos, researchers isolated cells from early zebrafish embryos and grew them as clusters. Liliana Solnica-Krezel, Washington University School of Medicine in St. Louis. View MediaSkin cell (keratinocyte)
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This normal human skin cell was treated with a growth factor that triggered the formation of specialized protein structures that enable the cell to move. Torsten Wittmann, University of California, San Francisco View MediaGlowing bacteria make a pretty postcard
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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 MediaFruit fly brain responds to adipokines
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Drosophila adult brain showing that an adipokine (fat hormone) generates a response from neurons (aqua) and regulates insulin-producing neurons (red).Akhila Rajan, Fred Hutchinson Cancer Center View Media
Cellular polarity
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As an egg cell develops, a process called polarization controls what parts ultimately become the embryo's head and tail. This picture shows an egg of the fruit fly Drosophila. Wu-Min Deng, Florida State University View MediaVimentin in a quail embryo
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Video of high-resolution confocal images depicting vimentin immunofluorescence (green) and nuclei (blue) at the edge of a quail embryo yolk. Andrés Garcia, Georgia Tech View MediaFly cells
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If a picture is worth a thousand words, what's a movie worth? Denise Montell, Johns Hopkins University School of Medicine View MediaFruit fly ovaries
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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
Early life of a protein
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This illustration represents the early life of a protein—specifically, apomyoglobin—as it is synthesized by a ribosome and emerges from the ribosomal tunnel, which contains the newly formed protein's Silvia Cavagnero, University of Wisconsin, Madison View MediaCellular traffic
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Like tractor-trailers on a highway, small sacs called vesicles transport substances within cells. This image tracks the motion of vesicles in a living cell. Alexey Sharonov and Robin Hochstrasser, University of Pennsylvania View MediaColor coding of the Drosophila brain - video
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This video results from a research project to visualize which regions of the adult fruit fly (Drosophila) brain derive from each neural stem cell. Yong Wan from Charles Hansen’s lab, University of Utah. Data preparation and visualization by Masayoshi Ito in the lab of Kei Ito, University of Tokyo. View MediaColor coding of the Drosophila brain - image
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This image results from a research project to visualize which regions of the adult fruit fly (Drosophila) brain derive from each neural stem cell. Yong Wan from Charles Hansen’s lab, University of Utah. Data preparation and visualization by Masayoshi Ito in the lab of Kei Ito, University of Tokyo. View MediaPigment cells in fish skin
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Pigment cells are cells that give skin its color. David Parichy, University of Washington View Media