The homogeneity of the faecal coliform flora of normal school-girls, characterized by serological and biochemical properties
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The homogeneity of fecal coliform flora in 52 schoolgirls was studied by serotyping and biotyping 10 randomly selected colonies in one fecal culture from each child. Ninety-eight clones were identified and of these 52 were dominant and 46 were minor strains. The probability of including at least one isolate of the dominant clone in a small random sample of colonies was calculated to be 86% for one colony, 94% for 2, 97% for 3, 99% for 4, and 99.3% for 5 randomly selected colonies.
KeywordsRandom Sample Biochemical Property Faecal Coliform Minor Strain Fecal Culture
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