title: Genetic relationship between an influenza A and a B virus.
abstract: The base sequence homology between all eight 32P-labelled RNA segment of fowl plague virus (FPV) and the complementary RNA (cRNA) of an influenza B virus (B-mass), and between segment 8 of virus N and the cRNA of the same influenza B strain has been determined. All segments of FPV and segment 8 of virus N show a significant base sequence homology, ranging from 18 to 50% suggesting that influenza A and B viruses have a common ancestor. The conserved regions in segments 4,6 and 8 of the influenza A strains are identical to corresponding regions of the influenza B virus tested.
mesh_terms: D001483:Base Sequence; D009690:Nucleic Acid Conformation; D009975:Orthomyxoviridae / Q000032:analysis / Q000235:genetics*; D012367:RNA, Viral / Q000032:analysis / Q000235:genetics*
chemical_list: D012367:RNA, Viral