Effects of PAP on DOX-induced Bax and Bcl-2 expression in H9c2 cells. Bax and Bcl-2 expression were detected by Immunofluorescence. (A) Fluorescence images of cells showed Bcl-2 immunofluorescence (green), Bax immunofluorescence (red) and DAPI staining (blue). (B) Bar image represents Bax / Bcl-2 expression level.