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Yersinia pestis (plague) bacteria
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Yersinia pestis (plague) bacteria
False-colour scanning electron micrograph (SEM) of Yersinia pestis, a species of Gram negative, non- motile, capsulated, aerobic bacteria that causes bubonic plague (the Black Death of the Middle Ages) in humans. The bacteria are primarily flea- carried pathogens of rats. Transfer to man occurs when a flea is obliged to leave its dead rodent host (often because its feeding apparatus is blocked by multiplying bacteria and it is starving) and suck human blood. Infection is rapid, featuring swelling (bubo) of lymph nodes and leading to septicaemia and pulmonary infection. Magnification: x2, 400 at 6x7cm size, x1, 200 at 35mm size
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Media ID 6284900
© CNRI/SCIENCE PHOTO LIBRARY
Bacteria Bacterial Bacteriology Bacterium Bacterium Causing Black Death Enterobacteria Gram Negative Bacteria Micro Organisms Microbe Microbes Plague Pneumonic Plague Septcemic Plague Yersinia Pestis False Coloured Micro Biology
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