Fig. 7.

(A) High-resolution images and locally enlarged views of Masson trichrome staining (Red, the muscle fibres; Green, collagen) in PBS, GelMA-O5, GelMA-O5/rGO and GelMA-O5/rGO/UCMSCs, sham operation groups after 4 weeks of injection. (B) Morphological analysis of infarct size of different groups. (C) Morphological analysis of wall thickness of different groups. (*) P < 0.05, (**) P < 0.01 and (***) P < 0.001. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)