A commercially available E. coli probe kit was used to test 1 lactose negative E. coli isolate and 2
hydrogen sulphide-producing E. coli isolates. The isolates were confirmed as E. coli by means of the
API system. The GENETRAK E. coli DNA probe kit reacted positively with the lactose negative isolate,
but negatively with the hydrogen sulphide-producing isolate.
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