Xenotransplant caution continues.
D000818:Animals; D035082:Federal Government; D033161:Government Regulation; D006801:Humans; D011323:Primates; D011640:Public Policy; D012106:Research / Q000331:legislation & jurisprudence*; D012109:Research Support as Topic; D018570:Risk Assessment; D013552:Swine; D014183:Transplantation, Heterologous / Q000009:adverse effects*; D014481:United States; D014486:United States Food and Drug Administration