Figure 5From: Paclitaxel loading in PLGA nanospheres affected the in vitro drug cell accumulation and antiproliferative activity Accumulation of PTX in ARO cells. ARO cells were incubated for 48 h with 2.13 or 4.27 μg/ml of either free PTX or PTX-NS. The amount of active PTX present in the cells was analyzed by HPLC. Data are expressed as mean ± SD of three replicates.Back to article page