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women's t-shirts anaerobe women's t-shirts anaerobic women's t-shirts bacteria women's t-shirts bacterial disease women's t-shirts bacterial infection women's t-shirts black death women's t-shirts bubonic women's t-shirts bubonic plague women's t-shirts colorized women's t-shirts disease women's t-shirts epidemic women's t-shirts eubacteria women's t-shirts facultative women's t-shirts false color women's t-shirts gammaproteobacteria women's t-shirts

photographs anaerobe photos anaerobic photos bacteria photos bacterial disease photos bacterial infection photos black death photos bubonic photos bubonic plague photos colorized photos disease photos epidemic photos eubacteria photos facultative photos false color photos gammaproteobacteria photos

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Plague bacteria (Yersinia pestis), color-enhanced scanning electron micrograph (SEM). These are Gram negative non-motile bacilli (rod-shaped bacteria). Y. pestis causes bubonic plague, thought to be the Black Death of Europe in the mid-14th century, and also the Great Plague of London in 1664-1665. The bacteria are spread to humans by bites from infected fleas carried on rats. Infection is rapid, causing swollen lymph nodes and leading to septicaemia, which is always fatal, and pulmonary infection, which can be fatal within a day. Prompt treatment with antibiotics can effect a cure. Magnification x6250 when printed at 10 centimeters high.