Fig. 4From: Multifunctional TPP-PEG-biotin self-assembled nanoparticle drug delivery-based combination therapeutic approach for co-targeting of GRP78 and lysosomeSubcellular localization images of GRP78, ceramide, cathepsin D, and LAMP1 in MCF-7 and HepG2 cells using confocal fluorescence microscopy. a The subcellular localizations of GRP78 and ceramide were observed by ER tracker and lysotracker, respectively. b The subcellular localization of cathepsin D and LAMP1 in the lysosome was monitored using lysotracker. ER tracker: 504/511(Ex/Em), Lysotracker: 577/590 (Ex/Em)Back to article page