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Legionella bacteria

Legionella bacteria. Coloured transmissionelec- tron micrograph (TEM) of Legionella pneumophila bacteria, the cause ofLegionnaires' disease. The flagellae (lightgreen), which enable the bacteria to be motile, are seen. These are rod-shaped Gram- negativebacilli. L. pneumophila was first identifiedas an agent of disease after a mysterious outbreakof pneumonia caused 29 deaths at an AmericanLegion convention in 1976. The bacterium was foundliving in water tanks, showerheads andair-conditioning systems. The disease causes fatalpneumonic lung damage in the elderly and unfit.Magnification unknown.. Stunning Photo Gifts From Science Photo Library