London, United Kingdom
Sem Of Legionella Pneumophila
Photograph - Photograph
False-colour scanning electron micrograph (SEM) of a no. of highly-curved forms of the bacterium Legionella pneumophila, the cause of Legionnaire's disease, a usually fatal form of lobar pneumonia. Members of the gram negative species are small & elongated, with a double membrane cell envelope. The disease obtained its name after an outbreak of 182 cases at the American Legion convention in Pennsylvania in 1976. Magnification X 3,000 at 35mm size. The red object at bottom of image is an artefact.
May 8th, 2013
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