Figure 1From: Possible Transmission of Zoonoses in Xenotransplantation: Porcine Endogenous Retroviruses (PERVs) from an Immunological Point of ViewPERVs produced in infected human cells escape complement mediated virolysis in human serum. Remaining intact PERV virions, as measured by RT activity, derived from a porcine cell line (PK15) or an infected human cell line (293) after incubation with fresh (FS) or heat-inactivated (HIS) human AB-serum in 30 min at 37°C.Back to article page