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BACTERIOLOGY : Campylobacter jejuni
Before 1973, C. jejuni was not recognized as a cause of human disease. It was not until selective methods for its isolation were developed that it was recognized as one of the most common causes of infectious diarrhea. Like other campylobacters, C. jejuni grows well only on enriched media under microaerophilic conditions. That is, it requires oxy-gen at reduced tension (5 – 10%), presumably due to vulnerability of some of its enzyme systems to superoxides. Growth usually requires 2 to 4 days, sometimes as much as a week. C. jejuni has the structural components found in other Gram-negative bacteria (eg, outer membrane, LPS). In contrast to the vibrios, it does not break down carbohydrates, but uses amino acids and metabolic intermediates for energy.
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