Fig. 2From: Umbilical cord-derived mesenchymal stem cells on scaffolds facilitate collagen degradation via upregulation of MMP-9 in rat uterine scarsConfirmation of uterine scar formation. Thirty days after full-thickness excision of uterine walls, Masson’s trichrome staining of normal uterine tissue a and wounded uterine tissue b. Arrowheads indicate repair sites. Scale bars, 150 μmBack to article page