Sequence analysis of 7 superiority OTUs showed diverse phyla of bacteria in the 16S rDNA cloning library, which consisted of Escherichia coli, Uncultured bacterium, Shigella flexneri and Citrobacter freundii. 对7个优势OTUs的代表克隆进行16Srdna序列分析,发现该克隆文库的优势细菌可能有大肠杆菌、志贺杆菌、柠檬酸菌等和未培养细菌等。