机译:PATHOGENICITY AND PHYLOGENETIC EVALUATION OF THE VARIANT NEWCASTLE DISEASE VIRUSES TERMED PIGEON PMV-1 VIRUSES BASED ON THE NUCLEOTIDE SEQUENCE OF THE FUSION PROTEIN GENE
Alexander DJ, CENT VET LAB, DEPT VIROL, ADDLESTONE KT15 3NB, SURREY, ENGLAND;
Hemagglutinin neuraminidase gene; Paramyxovirus type 1 infections; Cleavage site; Avirulent strains; Racing pigeons; Evolution; Virulent; Trees; Glycoprotein; Activation;