Human colonic biota studied by ribosomal DNA sequence analysis

Abstract excerpt

Human colonic biota is a complex microbial ecosystem that serves as a host defense. Unlike most microbial ecosystems, its composition has been studied extensively by relatively efficient culture methods. We have compared an established culture-based method with direct amplification and partial sequencing of cloned 16S rRNA genes from a human fecal specimen. Nine cycles of PCR were also compared with 35 cycles....

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