Because the probe of 517 rifampin-resistant did not be dotted on the gene chip， only sites of 518 and 526 mutations were detected， which were consistent with the results of DNA sequencing.(另有两株为517和526和517位双位点突变，因为芯片上未点517位突变的探针，所以只检测到518和526位的突变，该突变与测序结果完全一致。)