Figure 4
From: Protamine nanoparticles for improving shRNA-mediated anti-cancer effects
In vitro transfection efficiency of EGFP-loaded NPs. In vitro transfection efficiency of EGFP-loaded NPs was investigated by observing the microscopic images of A549 cells after incubation with free EGFP and EGFP-loaded NPs within 48 h ((A) free EGFP at 2 μg each well, (B) NPs loading EGFP of 2 μg each well, and (C) NPs loading EGFP of 4 μg each well).