Fig. 9
Lysosomal activity on the internalized NPs. Confocal laser scanning images of control (a–c) and FLPS treated (e–g) HaCaT cell, respectively from bright-field, green (λex: 458 nm; λem: 485 nm) and red (λex: 540 nm; λem: 610 nm) fluorescent channel. c, g neutral red (a lysosomal probe) stained lysosomes. f green fluorescent-FLPS located within the macropinosomes. d, h superimposed images of the bright-field, green, and red fluorescent images. Scale bar- 40 µm (control) and 5 µm (treated cells)