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Legionella bacteria. Colored Transmission Electron micrograph (TEM) of the bacteria Legionella pneumophila, cause of Legionnaires' disease. Here, numerous bacteria are seen sectioned at different angles typically, as at center, they are rod shaped Gram-negative bacilli with a single motile flagellum. L.pneumophila was first identified as an agent of disease after a mysterious outbreak of pneumonia caused 29 deaths at an American Legion convention in 1976. The bacteria was found living in water-tanks, shower-heads and air-conditioning systems. The disease, also called legionellosis, causes fatal pneumonic lung damage in the elderly and unfit. Magnification x20,000 at 5x7cm size. x26,000 at 6x9cm size.
May 30th, 2013
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