In the late 1990s, a London-based research team confirmed that, in a laboratory setting at least, PERVs could infect human cells. The discovery, for a time, “killed xenotransplantation,” said Björn Petersen, a xenotransplantation researcher with the Friedrich Loeffler Institute, the German government’s animal-disease research center. “Pharmaceutical companies withdrew their money from the research.” Around the […]