Fig. 4

Histological observation of AG/PEI-VX765 NGs after injection (n = 6/group). A Hematoxylin and eosin (H&E) staining of myocardial tissue (Scale bar: 100 μm). B Myocardial section stained with Masson's trichrome (Scale bar: 100 μm). C Statistical analysis of Masson’s trichrome staining (Error bar: SD). ^*p < 0.01 compared with MI group. Grouping was as follows: MI, MI + VX765, MI + AG-VX765 NGs, MI + PEI-VX765 NPs and MI + AG/PEI-VX765NGs