Plot of dose-normalized NTM concentrations (μg/μL) versus time (hours) profile for NTM-PNLC-GEL, NTM-PNLC, and Natacyn. *,**Denotes statistically significant difference between (NTM-PNLC-GEL and NTM-PNLC) and (NTM-PNLC-GEL and Natacyn) at P < 0.05, respectively; (n = 3, data represented as mean ± standard error).