Morphology of fresh heart valve homografts.
D000818:Animals; D003094:Collagen / Q000096:biosynthesis*; D004285:Dogs; D006351:Heart Valves / Q000637:transplantation*; D006801:Humans; D009206:Myocardium / Q000473:pathology*; D014181:Transplantation Immunology; D014184:Transplantation, Homologous
D003094:Collagen