BSIP / SCIENCE PHOTO LIBRARY BSIP / SCIENCE PHOTO LIBRARY
Nocardia bacteria. Coloured scanning electron micrograph (SEM) of Nocardia sp. bacteria. One species of this Gram-positive bacteria causes nocardiosis, a rare pulmonary infection that affects people with weakened immune systems. Another type causes mycetoma, a tropical skin and bone infection. Magnification: x4000 at 35mm size.
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