Organ transplantation between widely disparate species.
D000818:Animals; D005075:Biological Evolution; D006041:Goats; D006084:Graft Rejection; D000882:Haplorhini; D006648:Histocompatibility; D006801:Humans; D016030:Kidney Transplantation; D008322:Mammals; D002679:Pan troglodytes; D010215:Papio; D012756:Sheep; D013045:Species Specificity; D014181:Transplantation Immunology; D014183:Transplantation, Heterologous