Fig. 7.

Keratin-corona mediated rapid internalization of NPs in HaCaT cells. The phase-contrast, fluorescence, and superimposed images of HaCaT cells exposed to FLPS and Nile red stained PENPs particles. For the fluorescent imaging of coronated-FLPS and -PENPs, FITC fluorescent filter and I3 filter cube was used, respectively. Image arrangements from top to bottom: control, FLPS exposed for 30 min and 60 min, PENPs exposed for 30 and 60 min, respectively. The fluorescent-NPs without keratin-corona was used as a control