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To study the characteristics of drug-resistant genetic mutation of rpoB on coal workers' pneumoconiosis complicated with L-form of Mycobacterium tuberculosis. A total of 42 clinical isolated strains of Mycobacterium tuberculosis L-forms were collected, including 31 drug-resistant strains. Their genomes DNA were extracted, the target genes were amplified by PCR, and the hot regions in the rpoB gene...
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