Abstract
Peking duck cell nuclear DNA has no complementarity to RNA of Prague C Rous sarcoma virus (RSV). Upon infection of Peking duck cells by Prague C RSV, polynucleotide sequences complementary to Peking duck cell nuclear DNA can be detected in the high molecular weight RNA from progeny Peking duck cell passaged RSV (RSVPD) by RNA.DNA molecular hybridazation. When 3T3 cells are subsequently infected by RSVPD, polynucleotide sequences complementary to Peking duck cell nuclear DNA can be detected in the 3T3 cell nuclear DNA by RNA.DNA molecular hybridization. The potential consequences of the transfer of the Peking duck cell nuclear DNA from the avian to the murine cells are discussed.