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. 2016 Dec 20;7:2021. doi: 10.3389/fmicb.2016.02021

Figure 4.

Figure 4

Direct labeling of different mycobacteria with DLF-1. Fluorescent intensities of DLF-1 labeled bacteria were plotted against the numbers of bacteria. (AC) represent plots for M. Smegmatis, M. bovis BCG, and Mtb CDC1551, respectively. Linear trend lines with R-squares are also displayed for each plot. Linear range: M. smegmatis 4.3 × 105−4.3 × 107; M. bovis BCG 3.5 × 104−3.5 × 107; and Mtb 5.3 × 104−5.3 × 107. (D) Minimum number of Mtb within the detectable linear range. **P < 0.01; *P < 0.05. Error bars represent standard errors of means calculated based on results from three independent experiments.