title: Pathology of xenografts in aortic valve replacement.
mesh_terms: D000818:Animals; D001021:Aortic Valve / Q000473:pathology / Q000637:transplantation*; D001022:Aortic Valve Insufficiency / Q000473:pathology; D002356:Cartilage / Q000473:pathology; D002417:Cattle; D003094:Collagen; D003238:Connective Tissue / Q000473:pathology; D004549:Elastin; D005557:Formaldehyde; D006801:Humans; D008214:Lymphocytes; D009336:Necrosis / Q000473:pathology; D012422:Rupture, Spontaneous / Q000473:pathology; D013552:Swine; D014183:Transplantation, Heterologous
chemical_list: D005557:Formaldehyde; D003094:Collagen; D004549:Elastin