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156 bytes added ,  10:23, 23 December 2007
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===''E. coli'' characteristics===
 
===''E. coli'' characteristics===
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*Usually motile with flagella and fimbriae
 
*Oxidase negative (do not possess cytochrome C oxidase)
 
*Oxidase negative (do not possess cytochrome C oxidase)
*Grow on MacConkey agar (in presence of bile salts)
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*Grow on MacConkey agar (in presence of bile salts), producing pink colonies
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*Haemolytic activity on blood agar characteristic of certain strains
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*Lactose fermenter
 
*Reduce nitrates to nitrits and ferment glucose to produce acid and gas
 
*Reduce nitrates to nitrits and ferment glucose to produce acid and gas
 
*Possess a lipolysaccharide (O) antigen, a flagellate (H) antigen, polysaccharide capsule (K) antigens and fimbrial (F) antigens
 
*Possess a lipolysaccharide (O) antigen, a flagellate (H) antigen, polysaccharide capsule (K) antigens and fimbrial (F) antigens
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