Fig. 3From: Specific cancer stem cell-therapy by albumin nanoparticles functionalized with CD44-mediated targetingFluorescence analysis of uptake of HA-eNPs/ATRA in B16F10 cells. a Fluorescence images of uptake of coumarin-6-labeled NPs at different ATRA concentrations (4 h). b Fluorescence images of uptake of coumarin-6-labeled NPs at different time points (5 μM ATRA). Fluorescence signals were observed by fluorescence microscopy. Scale bar represents 50 μmBack to article page