Pulmonary xenotransplantation: rapidly progressing into the unknown.
D000818:Animals; D005544:Forecasting; D006084:Graft Rejection / Q000209:etiology / Q000276:immunology; D006801:Humans; D007111:Immunity, Cellular; D016040:Lung Transplantation; D012141:Respiratory Tract Infections / Q000601:surgery; D014181:Transplantation Immunology; D014183:Transplantation, Heterologous / Q000276:immunology* / Q000639:trends*