Objective To investigate the relationship between the expression of whiB7 gene and the multidrug resistance of the mycobacterium tuberculosis(MTB). Methods The antibioticses,including rifampicin,isoniazid,streptomycin,ethambutol and fluoroquinolones,were used to stimulate the clinic MTB accordingly.After the drug stimulation,the expression of whiB7 was measured by quantitive real time PCR.Results The expressing level of whiB7 gene was significantly improved after the MTB being stimulated by isoniazid,strept...