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women's t-shirts communicable disease women's t-shirts escherichia coli women's t-shirts e. coli women's t-shirts k12 women's t-shirts bacteria women's t-shirts intestinal tract women's t-shirts diarrhea women's t-shirts disease women's t-shirts infectious disease women's t-shirts infectious diseases women's t-shirts communicable diseases women's t-shirts e coli women's t-shirts bacterial women's t-shirts diseases women's t-shirts tem women's t-shirts

photographs communicable disease photos escherichia coli photos e. coli photos k12 photos bacteria photos intestinal tract photos diarrhea photos disease photos infectious disease photos infectious diseases photos communicable diseases photos e coli photos bacterial photos diseases photos tem photos

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Color enhanced transmission electron micrograph (TEM) of Escherichia coli K12, a rod shaped bacteria. Normally E. coli serves a useful function by suppressing the growth of harmful bacterial and synthesizing vitamins in the intestinal tract. A minority of E. coli strains can cause human illness. E. coli O157H7 is a rare variety that produces potent toxins that cause severe damage to the intestine through diarrhea and internal bleeding. These toxins are closely related to the toxin produced by Shigella dysenteriae, the organism that causes bacterial dysentery. 6,250x at 35mm