大肠杆菌一、生物学性状大肠杆菌为革兰氏阴性、中等大杆菌,有鞭毛和菌毛。在普通培养基上,形成中等大无色透明的菌落。本菌能分解多种糖类,根据其分解乳糖的特征,可与肠道致病菌区别。大肠杆菌有菌体(O)、包膜(K)和鞭毛(H) Escherichia coli First, the biological traits E. coli is Gram-negative, moderate bacilli, flagella and pili. In normal medium, the formation of medium-sized colorless transparent colonies. The bacteria can break down a variety of sugars, according to the characteristics of its decomposition of lactose, gut bacteria can be distinguished from the gut. Escherichia coli has bacteria (O), envelope (K) and flagella (H)