Fig. 5From: Induction of granulation tissue for the secretion of growth factors and the promotion of bone defect repairComparison of induced membranes in the promotion of stem cell proliferation and osteogenic differentiation. a ALP activity was highest at week 4, lowest at weeks 2 and 8, and moderate at week 6 (P < 0.05). b OD values at weeks 4 and 6 were higher than at weeks 2 and 8 (P < 0.05)Back to article page