Fig. 8From: A synergistic bactericidal effect of low-frequency and low-intensity ultrasound combined with levofloxacin-loaded PLGA nanoparticles on M. smegmatis in macrophagesTEM analysis of the damage to M. smegmatis in the different treatment groups. The black arrow indicates the LEV-NPs; the yellow arrow indicates lipid droplets and glycogen; the blue arrow indicates the broken cell wall; and the red arrow indicates the LEV-NPs. (magnification, ×30,000)Back to article page