Fig. 2
From: Cellular uptake and intracellular degradation of poly(alkyl cyanoacrylate) nanoparticles
a Colocalization (white arrows) of PBCA NPs (red) with early endosomes), b late endosomes and c lysosomes (all in green) in RBE4 cells. d Colocalization of POCA NPs and lysosomes in PC3 cells. Both colors in the same pixel are seen as yellow. Cells were incubated with NPs for 3 h after labeling the endocytic compartments