E. coli bacteria

E.coli bacteria. Coloured scanning electronmicrograph of the rod-shaped, Gram-negativebacteria, Escherichia coli, commonly known as E. coli. These bacteria are normalinhabitants of the human intestine (also animalintestines) and are usually harmless. Undercertain conditions E. coli may increase innumber and cause infection. Serotypes of E. coli are responsible for gastro- enteritis inchildren, particularly in tropical countries. Inadults it is the cause of "traveller's diarrhoea";and of 80% of all urinary tract infections. It isalso the organism most used in genetic studies.Magnification: x3, 000 at 6x7cm, x1, 500 at 35mmsize. x10, 000 at 8x10". Stunning Photo Gifts From Science Photo Library

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