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[Study on small intestinal lumenal and membrane flora of 30 healthy Chinese].

Lumenal and membrane flora were investigated using ileum and jejunum samples obtained through endoscopy. 10 kinds of representative anaerobic or aerobic bacteria were cultured for quantitative and qualitative analysis. The result showed there were significant differences between lumenal and membrane flora on Clostridium of ileum, Lactobacillus and Bacillus bifudus in jejunum (P < 0.05). Enterococci were not found in all of these 30 patients. In jenumum, E. Coli was found in 53.3% (16/30) of lumenal flora and 33.3% (10/30) of membrane flora, Bacteroides were found in 40.0% (12/30) of lumenal flora and 33.3% (10/30) of membrane flora respectively.