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TGF-β1 secreted into the medium was measured using ELISA. Statistically significant differences were found by one-way ANOVA in TGF-β1 concentration. (a) hACs alone; (b) UCB-MSCs alone; (c) hUCB-MSCs cultured with growth factors; (d) direct coculture (1 : 1); (e) direct coculture (3 : 1); (f) direct coculture (5 : 1); (g) indirect coculture (UCB-MSCs); and (h) indirect coculture (hACs). ∗∗ P < 0.01.
