文档介绍：Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University Medical Microbiology Medical Microbiology Department of Microbiology, HMU Department of Microbiology, HMU Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University 肠杆菌科 Enterobacteriaceae 微生物学教研室李迪 Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University 肠杆菌科的共同特点?肠杆菌科:是一群生物学性状相似的 G- 杆菌,寄居于人和动物的肠道?至少有 30 个菌属, 120 个以上的菌种?多数是肠道的正常菌群?少数为致病菌,可引起人类肠道传染病 Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University 肠杆菌科的共同特点?形态与结构?G - 杆菌?无芽胞?一般无荚膜?周鞭毛?菌毛?培养?兼性厌氧或需氧?营养要求不高 Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University 肠杆菌科的共同特点?生化反应:活泼?生化鉴定-乳糖发酵?致病菌:不发酵乳糖?非致病菌:发酵乳糖 Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University SS培养基肠道非致病菌肠道致病菌 Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University 鉴定中最重要的生化反应乳糖发酵试验肠道非致病菌(埃希菌属) 发酵乳糖、产酸产气+ 肠道致病菌(志贺菌属、沙门菌属等)不发酵乳糖— Department of Microbiology, Harbin Medical University Department of Microbiology, Harbin Medical University ?O(菌体)抗原?H(鞭毛)抗原?K 抗原或 Vi抗原肠杆菌科的共同特点