Mallory’s trichrome-stained sections in different groups. (A, D, G) after 1 week (B, E, H) after 2 weeks (C, F, I) after 8 weeks. Laceration group (group II) D–F BM-MSCs-treated group (group III) ADSCs-treated group (group IV). Collagen fibers (↑) are seen between muscle fibers. At every time point, the amount of collagen fibers decreased in stem cell-treated groups (III, IV) compared to untreated laceration group (II). Also notice minimal amounts of collagen fibers in ADSCs-treated group (IV) compared to BM-MSCs-treated groups (III) at each time point. Fat cells (*) are seen between muscle fibers