Fig. 2From: The effect of biomechanical stimulation on osteoblast differentiation of human jaw periosteum-derived stem cellsEffect of cyclic equibiaxial tension on human periosteal-derived stem cell differentiation. a ALP was stained by BCIP/NBT. b ALP activity was measured by flow cytometry. The statistical significance of each group were analyzed by the paired t test (*p < 0.05 and **p < 0.01)Back to article page