Assertion: e. coli | /r/MadeOf | an array of stable lineages
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text: As the relative frequency of many of the antigens varied with the isolate source but the O (somatic), K (capsular) and H (flagellar) antigens were non-randomly associated, and as some serotypes were distributed worldwide, it was postulated that the species E. coli consists of an array of stable lineages (called clones), among which little recombination of chromosomal genes occurs.