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Salivary 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 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 MediaScientists display X-ray diffraction pattern obtained with split X-ray beamline
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Scientists from Argonne National Laboratory's Advanced Photon Source (APS) display the first X-ray diffraction pattern obtained from a protein crystal using a split X-ray beam, the first of its kind a GM/CA Collaborative Access Team View MediaCrane fly spermatocyte undergoing meiosis
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A crane fly spermatocyte during metaphase of meiosis-I, a step in the production of sperm. Michael Shribak, Marine Biological Laboratory/University of Chicago. View MediaYeast cells entering mitosis
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Yeast cells entering mitosis, also known as cell division. The green and magenta dots are two proteins that play important roles in mitosis. They show where the cells will split. Alaina Willet, Kathy Gould’s lab, Vanderbilt University. View MediaMouse colon with gut bacteria
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A section of mouse colon with gut bacteria (center, in green) residing within a protective pocket. Sarkis K. Mazmanian, California Institute of Technology View MediaBacterial cells aggregating above the light organ of the Hawaiian bobtail squid
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A light organ (~0.5 mm across) of a juvenile Hawaiian bobtail squid, Euprymna scolopes. Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. View MediaTwo mouse fibroblast cells
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Two mouse fibroblasts, one of the most common types of cells in mammalian connective tissue. They play a key role in wound healing and tissue repair. Dylan T. Burnette, Vanderbilt University School of Medicine. View MediaYeast cells with nuclei and contractile rings
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Yeast cells with nuclei shown in green and contractile rings shown in magenta. Nuclei store DNA, and contractile rings help cells divide. Alaina Willet, Kathy Gould’s lab, Vanderbilt University. View MediaAxolotl showing nervous system
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The head of an axolotl—a type of salamander—that has been genetically modified so that its developing nervous system glows purple and its Schwann cell nuclei appear light blue. Prayag Murawala, MDI Biological Laboratory and Hannover Medical School. View MediaCell-like compartments emerging from scrambled frog eggs 3
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Cell-like compartments spontaneously emerge from scrambled frog eggs. Endoplasmic reticulum (red) and microtubules (green) are visible. Video created using epifluorescence microscopy. Xianrui Cheng, Stanford University School of Medicine. View MediaNeutrophil-like cells migrating in a microfluidic chip
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Neutrophil-like cells (blue) in a microfluidic chip preferentially migrating toward LTB4 over fMLP. Caroline Jones, University of Texas at Dallas. View MediaCell proliferation in a quail embryo
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Image showing that the edge zone (top of image) of the quail embryo shows no proliferating cells (cyan), unlike the interior zone (bottom of image). Non-proliferating cell nuclei are labeled green. Andrés Garcia, Georgia Tech View MediaCluster analysis of mysterious protein
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Researchers use cluster analysis to study protein shape and function. Each green circle represents one potential shape of the protein mitoNEET. Patricia Jennings and Elizabeth Baxter, University of California, San Diego View MediaGlow-in-the-dark salamanders
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These six-month-old axolotls, a kind of salamander, glow green and blue under ultraviolet light. That's because they were genetically modified to make harmless green fluorescent protein, or GFP. View MediaCCP enzyme
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The enzyme CCP is found in the mitochondria of baker’s yeast. Scientists study the chemical reactions that CCP triggers, which involve a water molecule, iron, and oxygen. Protein Data Bank. View MediaMulticolor STORM
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In 2006, scientists developed an optical microscopy technique enabling them to clearly see individual molecules within cells. In 2007, they took the technique, abbreviated STORM, a step further. Xiaowei Zhuang, Harvard University View MediaEndoplasmic reticulum abnormalities
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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 MediaStaphylococcus aureus aggregating upon contact with synovial fluid
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Staphylococcus aureus bacteria (green) grouping together upon contact with synovial fluid—a viscous substance found in joints. Paul Stoodley, The Ohio State University. View MediaCrab larva eye
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Colorized scanning electron micrographs progressively zoom in on the eye of a crab larva. In the higher-resolution frames, bacteria are visible on the eye. Tina Weatherby Carvalho, University of Hawaii at Manoa View MediaDying melanoma cells
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Melanoma (skin cancer) cells undergoing programmed cell death, also called apoptosis. This process was triggered by raising the pH of the medium that the cells were growing in. Dylan T. Burnette, Vanderbilt University School of Medicine. View MediaStaphylococcus aureus aggregates on microstructured titanium surface
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Groups of Staphylococcus aureus bacteria (blue) attached to a microstructured titanium surface (green) that mimics an orthopedic implant used in joint replacement. Paul Stoodley, The Ohio State University. View MediaSnowflake yeast 1
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Multicellular yeast called snowflake yeast that researchers created through many generations of directed evolution from unicellular yeast. William Ratcliff, Georgia Institute of Technology. View MediaC. elegans with blue and yellow lights in the background
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These microscopic roundworms, called Caenorhabditis elegans, lack eyes and the opsin proteins used by visual systems to detect colors. H. Robert Horvitz and Dipon Ghosh, Massachusetts Institute of Technology. View MediaIntroduction 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 MediaPig trypsin crystal
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A crystal of pig trypsin protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View MediaNMR spectrometer
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This photo shows a Varian Unity Inova 900 MHz, 21.1 T standard bore magnet Nuclear Magnetic Resonnance (NMR) spectrometer. Center for Eukaryotic Structural Genomics View MediaSelf-organizing proteins
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Under the microscope, an E. coli cell lights up like a fireball. Each bright dot marks a surface protein that tells the bacteria to move toward or away from nearby food and toxins. View MediaCulex quinquefasciatus mosquito larvae
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Mosquito larvae with genes edited by CRISPR swimming in water. Valentino Gantz, University of California, San Diego. 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 MediaHeLa cells
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Scanning electron micrograph of an apoptotic HeLa cell. Zeiss Merlin HR-SEM. National Center for Microscopy and Imaging Research View MediaBioluminescent imaging in adult zebrafish 04
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Luciferase-based imaging enables visualization and quantification of internal organs and transplanted cells in live adult zebrafish. View MediaAdvanced Photon Source (APS) at Argonne National Lab
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The intense X-rays produced by synchrotrons such as the Advanced Photon Source are ideally suited for protein structure determination. Southeast Collaboratory for Structural Genomics View MediaHigh-throughput protein structure determination pipeline
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This slide shows the technologies that the Joint Center for Structural Genomics developed for going from gene to structure and how the technologies have been integrated into a high-throughput pipeline Joint Center for Structural Genomics 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 MediaFinding one bug
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A nanometer-sized biosensor can detect a single deadly bacterium in tainted ground beef. How? Weihong Tan, University of Florida in Gainesville View MediaPrecisely 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 MediaCell-like compartments from frog eggs 5
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Cell-like compartments that spontaneously emerged 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 MediaColor-coded chromosomes
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By mixing fluorescent dyes like an artist mixes paints, scientists are able to color code individual chromosomes. Anna Jauch, Institute of Human Genetics, Heidelberg, Germany View MediaX-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor 6
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X-ray co-crystal structure of Src kinase bound to a DNA-templated macrocycle inhibitor. Markus A. Seeliger, Stony Brook University Medical School and David R. Liu, Harvard University View MediaEM of yeast cell division
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Cell division is an incredibly coordinated process. Matthew West and Greg Odorizzi, University of Colorado 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
Dividing yeast cells with spindle pole bodies and contractile rings
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During cell division, spindle pole bodies (glowing dots) move toward the ends of yeast cells to separate copied genetic information. Alaina Willet, Kathy Gould’s lab, Vanderbilt University. View MediaRNase A (2)
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A crystal of RNase A protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View MediaBacterial symbionts colonizing the crypts of a juvenile Hawaiian bobtail squid light organ
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A light organ (~0.5 mm across) of a Hawaiian bobtail squid, Euprymna scolopes, stained blue. Margaret J. McFall-Ngai, Carnegie Institution for Science/California Institute of Technology, and Edward G. Ruby, California Institute of Technology. View MediaCell-like compartments from frog eggs 4
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Cell-like compartments that spontaneously emerged 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 MediaRNase A (1)
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A crystal of RNase A protein created for X-ray crystallography, which can reveal detailed, three-dimensional protein structures. Alex McPherson, University of California, Irvine View MediaMapping brain differences
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This image of the human brain uses colors and shapes to show neurological differences between two people. Arthur Toga, University of California, Los Angeles View MediaDeveloping zebrafish fin
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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