Fig. 7From: Repair of alveolar cleft bone defects by bone collagen particles combined with human umbilical cord mesenchymal stem cells in rabbitALP staining results (×100). a–d Sampling group 3 months after surgery; e–h sampling group 6 months after surgery. a, e Normal group. b, f Control group. c, g Material group. d, h MSCs group. Mark the area of the positive signal with a red arrowBack to article page