Figure 5From: TGF-β1 and serum both stimulate contraction but differentially affect apoptosis in 3D collagen gelsDNA amount in contracting collagen gels. Fibroblasts were embedded in collagen gels and cultured in floating media containing 1% FCS or 100 pM TGF-β1 or control. DNA content, as a surrogate for cell number, was determined at the time of plating and after 5 and 10 days. *P < 0.05, as compared with SF-DMEM. Data are shown as means ± SEM.Back to article page