Fig. 4From: Induction of granulation tissue for the secretion of growth factors and the promotion of bone defect repairAlkaline phosphatase activity. a, d At weeks 2 and 8, the ALP activity in the periosteum group was higher than in the induced membrane group (P < 0.05). b, c Induced membrane and periosteum groups were almost equal (P > 0.05) and both were higher than the epimysium (P < 0.05)Back to article page