Xenotransplantation.
D000818:Animals; D001709:Biotechnology / Q000639:trends; D018562:Disease Transmission, Infectious; D006084:Graft Rejection / Q000517:prevention & control; D006801:Humans; D012307:Risk Factors; D014183:Transplantation, Heterologous / Q000009:adverse effects / Q000379:methods / Q000639:trends*