Fig. 2From: A synergistic bactericidal effect of low-frequency and low-intensity ultrasound combined with levofloxacin-loaded PLGA nanoparticles on M. smegmatis in macrophagesSEM and TEM images of the blank NPs and LEV-NPs. a SEM image of the blank NPs; b TEM image of the NPs; c SEM image of the LEV-NPs; and d TEM image of the LEV-NPsBack to article page