Representative clinical images and hematoxylin/eosin stained sections showing complete absence of signs of rejection at day 100 in (A, B) 20311 and (C, D) 20313. A control animal (20312) undergoing conditioning, but not HCT, prior to VCA 100 days later acutely rejected VCA with 9 days with eschar formation (E) and necrosis (F). Two additional control animals (17519, 17520) underwent VCA alone, without conditioning and rejected by day 6 (data not shown). HCT, hematopoietic cell transplantation; VCA, vascularized composite allograft.