Fig 1.
Workflow of the study showing timeline for sample collection and processing in this study.
*Only M. tuberculosis culture positive samples were retrospectively selected for the current study.
Fig 2.
Direct, USP and bio-safe USP smear.
USP and bio-safe USP smears show a clear background as compared to direct smear.
Table 1.
Smear status of culture positive sputum samples.
Fig 3.
Direct detection of rpoB mutations in bio-safe sputum samples (n = 87) by DNA sequencing.