markedly shorter than the graft survivals we previously reported. The discovery of high levels
of porcine cytomegalovirus (pCMV) in one of the rejected xenografts led us to evaluate
whether this reduction in graft survival might be because of the inadvertent introduction of
pCMV into our α1, 3-galactosyltransferase gene knockout swine herd. Methods Archived
frozen sections of xeno-kidney grafts over the past 10 years were analyzed for the presence …