Fig. 3From: TGF-β1-induced differentiation of SHED into functional smooth muscle cellsCollagen gel contraction assay. Gel surface areas were measured and further analyzed using the Image J software. *: p < 0.05, ^: p > 0.05. HUVECs human umbilical vein endothelial cells, SHED stem cells from human exfoliated deciduous teethBack to article page