FIG. 9.

Effect of TGF-β1 treatment on ring morphology. (A) Untreated control ring with no microspheres. (B) Ring treated with 10 ng/mL exogenous (exo) TGF-β1. (C, D) Ring with unloaded gelatin microspheres either (C) untreated or (D) treated with exogenous TGF-β1. (E) Ring with TGF-β1-loaded microspheres. Change in (F) inner diameter and (G) ring thickness after removal from agarose posts. Scale = 1 mm, *p < 0.05. Values are mean ± SD, sample size for each group shown on bars. Color images available online at www.liebertpub.com/tea