Mutation of the F-Protein Cleavage Site of Avian Paramyxovirus Type 7 Results in Furin Cleavage, Fusion Promotion, and Increased Replication in Vitro but Not Increased Replication, Tissue Tropism, or Virulence in Chickens

Journal of Virology - United States

doi 10.1128/jvi.06765-11