title: Pre-existing antibodies: relevance to heart transplantation.
mesh_terms: D000937:Antigen-Antibody Reactions; D004912:Erythrocytes / Q000276:immunology; D016027:Heart Transplantation; D006648:Histocompatibility; D006801:Humans; D007239:Infections / Q000276:immunology; D014181:Transplantation Immunology; D014184:Transplantation, Homologous