title: Heart transplantation, problems and progress.
mesh_terms: D000961:Antilymphocyte Serum / Q000627:therapeutic use; D016027:Heart Transplantation; D006648:Histocompatibility; D006650:Histocompatibility Testing; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use; D014019:Tissue Donors; D014181:Transplantation Immunology; D014184:Transplantation, Homologous
chemical_list: D000961:Antilymphocyte Serum; D007166:Immunosuppressive Agents