作者将过去定为肠道菌46群的9株细菌进行了一系列生化反应鉴定,发现它们与肠杆菌科其他菌属的区别为:靛基质、V-P、硫化氢、尿素、苯丙氨酸脱氨酶、赖氨酸和鸟氨酸脱羧酶、精氨酸双水解酶、D—葡萄糖产气、海藻糖产酸以及动力等试验均为阴性;甲基红、枸橼酸盐(西蒙氏)、乳糖和棉子糖产酸试验均为阳性;所有菌株对大肠菌素有抗性。作者将其中1株(CDC 2896-78,ATCC 35017) The authors identified a series of 9 biochemical reactions of the nine bacteria that were previously identified as Enterobacteriaceae 46 and found that they differ from other Enterobacteriaceae species in that they are indole, VP, hydrogen sulfide, urea, phenylalanine Lysine and ornithine decarboxylase, arginine hydrolase, D-glucose gas production, trehalose production and kinetic test were negative; methyl red, citrate (Simon) , Lactate and raffinose acid test were positive; all strains of colistin resistance. One of them (CDC 2896-78, ATCC 35017)