Figure 2From: Lysis of tubercle bacilli in fresh and stored sputum specimens: implications for diagnosing tuberculosis in stored and paucibacillary specimens by PCREffect of storage on performance of IS 6110 -based PCR and devR PCR using pellet-derived DNA. For both panels: +ve, purified M. tuberculosis DNA as positive control; lane 1, DNA isolated from fresh pellet (FP); lane 2, DNA from 2 months-stored pellet (P2). A and B represent two different samples.Back to article page