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Scanning electron micrograph of Ebola virus Makona (in red) from the West African epidemic shown on the surface of Vero cells (blue).-stock-foto
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Colorized transmission electron micrograph of influenza A virus particles, colorized red and gold.-stock-foto
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One day after head injury (left), bright dye along the edge of the brain suggests damage to the meninges, or the brain?s protective lining.-stock-foto
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The brain and nearby structures (including the skull, meninges, ventricles and spinal cord). An enlarged inset shows the skull, fluid, and brain.-stock-foto
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Traumatic microbleeds appear as dark lesions on MRI scans and suggest damage to brain blood vessels after head injury.-stock-foto
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Hip replacement surgery.-stock-foto
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Hip replacement surgery.-stock-foto
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Hip replacement surgery.-stock-foto
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Hip replacement surgery.-stock-foto
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Hip replacement surgery.-stock-foto
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Preparation of the surgical field for hip replacement surgery.-stock-foto
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X-ray of severe scoliosis in an adult.-stock-foto
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Hip replacement surgery.-stock-foto
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Hip replacement surgery.-stock-foto
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X-ray of severe scoliosis in an adult.-stock-foto
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Hip replacement surgery.-stock-foto
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Colorized scanning electron micrograph of a cell (pink) infected with the Omicron strain of SARS-CoV-2 virus particles (yellow).-stock-foto
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Colorized scanning electron micrograph of a cell (green) infected with the Omicron strain of SARS-CoV-2 virus particles (gold).-stock-foto
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Colorized scanning electron micrograph of a cell (brown) infected with the Omicron strain of SARS-CoV-2 virus particles (orange).-stock-foto
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Colorized scanning electron micrograph of a cell (red) infected with the Omicron strain of SARS-CoV-2 virus particles (blue).-stock-foto
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Colorized scanning electron micrograph of a cell (brown) infected with the Omicron strain of SARS-CoV-2 virus particles (purple).-stock-foto
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Colorized scanning electron micrograph of a cell (pink) infected with the Omicron strain of SARS-CoV-2 virus particles (yellow).-stock-foto
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Colorized scanning electron micrograph of a cell (purple) infected with the Omicron strain of SARS-CoV-2 virus particles (pink).-stock-foto
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Colorized scanning electron micrograph of a cell (purple) infected with the Omicron strain of SARS-CoV-2 virus particles (green).-stock-foto
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Colorized scanning electron micrograph of a cell (green) infected with the Omicron strain of SARS-CoV-2 virus particles (orange).-stock-foto
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Colorized scanning electron micrograph of a cell (red) infected with the Omicron strain of SARS-CoV-2 virus particles (blue).-stock-foto
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Scanning electron micrograph of a cell (purple) infected with the Omicron strain of SARS-CoV-2 virus particles (orange).-stock-foto
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Colorized scanning electron micrograph of a cell (blue) infected with the Omicron strain of SARS-CoV-2 virus particles (pink).-stock-foto
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Colorized scanning electron micrograph of a cell (blue) infected with the Omicron strain of SARS-CoV-2 virus particles (yellow).-stock-foto
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Colorized scanning electron micrograph of a cell (teal) infected with the Omicron strain of SARS-CoV-2 virus particles (yellow).-stock-foto
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Colorized scanning electron micrograph of a cell (green) infected with the Omicron strain of SARS-CoV-2 virus particles (pink).-stock-foto
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Colorized transmission electron micrograph of influenza A virus particles, colorized green and blue.-stock-foto
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Colorized transmission electron micrograph of influenza A virus particles, colorized orange and gold.-stock-foto
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XDR TB occurs when a Mycobacterium tuberculosis strain is resistant to isoniazid and rifampin, two of the most powerful first-line drugs.-stock-foto
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Colorized scanning electron micrograph of a cell (teal) infected with the Omicron strain of SARS-CoV-2 virus particles (purple).-stock-foto
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Colorized scanning electron micrograph of a cell (green) infected with the Omicron strain of SARS-CoV-2 virus particles (blue).-stock-foto
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Colorized scanning electron micrograph of a cell (red) infected with the Omicron strain of SARS-CoV-2 virus particles (yellow-green).-stock-foto
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Colorized scanning electron micrograph of a cell (red) infected with the Omicron strain of SARS-CoV-2 virus particles (blue).-stock-foto
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Colorized scanning electron micrograph of a cell (pink) infected with the Omicron strain of SARS-CoV-2 virus particles (teal).-stock-foto
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Red beans close-up in a wooden spoon.-stock-foto