Fig. 5

The effect of AG/PEI-VX765 NGs on myocardial apoptosis was assessed by TUNEL immunofluorescence (n = 6/group). A Microscopic observation of TUNEL-stained samples (Scale bar: 100 μm). The nucleus was stained with DAPI (blue), while apoptotic cells were visualized by TUNEL staining (green). B Statistical analysis of TUNEL staining (Error bar: SD). **p < 0.01 and ***p < 0.001 compared with MI group. Grouping was as follows: MI, MI + VX765, MI + AG-VX765 NGs, MI + PEI-VX765 NPs and MI + AG/PEI-VX765NGs