Figure 2.
Stability studies of different liposomal formulations under various pH conditions. Arsenic trioxide (ATO) was encapsulated in liposomes of (a) different sizes and (b) different charges after dialysing in buffers at pH 4, pH 7, and pH 10. Data are shown as mean ± SD of three independent experiments; * p < 0.05, ** p < 0.01.