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Acid Resistance Systems Required for Survival of<i>Escherichia coli</i>O157:H7 in the Bovine Gastrointestinal Tract and in Apple Cider Are Different

1 Aug 2004

Abstract excerpt

Escherichia coli O157:H7 is a highly acid-resistant food-borne pathogen that survives in the bovine and human gastrointestinal tracts and in acidic foods such as apple cider. This property is thought to contribute to the low infectious dose of the organism. Three acid resistance (AR) systems are expressed in stationary-phase cells. AR system 1 is sigma(S) dependent, while AR systems 2 and 3 are glutamate and...

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PMID: 15294816
DOI: 10.1128/aem.70.8.4792-4799.2004

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