To analyze the isoniazid sensitivity isolates and resistance isolates, both conventional PCR and multi PCR were and H37Rv was used as control. The two methods amplified the anticipated sections and the rate of consistency was 100%.

• 对H3 7Rv标准株、INH敏感株及INH耐药株分别采用常规PCR和multi PCR进行同时扩增 ；结果两种扩增方法均能扩增出预期的目的片段 ；符合率达 10 0 %25 .