用Ｅｔｅｓｔ法对１５０株革兰阴性杆菌进行药敏试验，测定它们对１２种抗生素的最低抑菌浓度（ＭＩＣ），报告如下。１　材料和方法１１　菌株来源　１５０株革兰阴性杆菌取自本院１９９７年６月～１９９８年４月院内感染病人的送检标本。１２　药敏培养基和Ｅｔｅｓｔ纸 150 strains of Gram-negative bacilli were tested for susceptibility using the Etest method and their minimum inhibitory concentration (MIC) against 12 antibiotics was determined as follows. 1 Materials and methods 1  150 strains of strains Gram-negative bacilli from our hospital from June 1997 to April 1998 inpatients infected specimens. 1  2 drug-sensitive medium and Etest paper