Fig. 4.

(A) Histological and immunohistochemistry analyses of reconstructed urethras. Animals implanted with 5% PAA treated cell-seeded scaffold showed formation of complete layers of transitional epithelium, more smooth muscle and vessels, scale bar = 20 μm; mononuclear cells aggregates in cell-seeded non-PAA group (*) scale bar = 20 μm; evident fibrosis formation (*) in unseeded PAA group, scale bar = 20 μm, (B) histomorphometric analyses of epithelium, smooth muscle and vessel among 3 groups (* p < 0.05).