FIG. 6.

Explant histology and immunogenicity evaluation of unseeded TEVG. Trichrome (a, b) and Ki67 (c, d) images of 8-week grafts with anastomotic region (a, c) and mid-graft region (b, d). Calponin-stained sections of acellular grafts implanted for 8 weeks (e) and 24 weeks (f). Von Kossa staining of 8-week graft (g) and 24-week graft (h) shows the absence of mineralization. Verhoeff-Van Gieson (VVG) staining of 6-month explants shows elastic fibers (i). Scale bars=200 μm and the symbol * indicates lumenal surface. Color images available online at www.liebertpub.com/tea