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Time-course effects of 50% ADSC-CM and 5 ng/ml TGF-β1 on HA and collagen expression. Protein expression of HA and collagen type I by HDFs was assessed with ELISA after 3, 12, 36, 48 h of ADSC-CM or TGF-β1 treatment. The experiments were repeated two times (n = 2). Each bar indicates average value ± STDEV
