Fig. 6

Comparison of the fluorescence intensity of various concentrations of DDS complex following paclitaxel uptake. Paclitaxel–BODIPY 564/570–chitosan–niosome uptake by OV2008 cells at concentrations 0.4 µM, 0.04 µM, and 0.01 µM after 1 h of incubation (the images showing the cells following 10 min incubation with DDS containing all three concentrations of paclitaxel are found in Additional file 1). Scale bar = 10 µm