Gingerly approaching xenotransplant policy

BETHESDA, Md. - The differences between U.S. and U.K. regulation of xenotransplantation can be summed up as "yes, if. . ." versus "no, but. . .", according to senior regulators from both sides of the Atlantic who met to discuss xenotransplantation policies at the NIH last week.

According to Rachel Arrundale, a U.K. Department of Health official responsible for xenotransplantation policy, Britain's "no, but. . ." stance reflects a cautious position which suggests that xenotransplantation will not be permitted unless compelling arguments for its safety are made...