Porcine cytomegalovirus (PCMV) infection is widely prevalent among pigs  and PCMV is one of the viruses which may be transmitted during xenotransplantation using pig cells  tissues  or organs While human cytomegalovirus (HCMV) is a major risk factor for allotransplantation  it is still unclear whether PCMV is able to infect human cells or pose a risk for xenotransplantation