| antigenic epitopes in the hemagglutinin of qinghai-type influenza h5n1 virus. | the highly pathogenic avian influenza h5n1 viruses have become widespread and evolved into several clades. in our previous studies, the antigenic sites of the h5 hemagglutinin (ha) were characterized by selection and sequencing of escape mutants. in the present studies we analyzed the antigenic epitopes recognized by monoclonal antibodies against avian influenza a/duck/novosibirsk/56/05 (h5n1) virus isolated in western siberia and belonging to subclade 2.2 of the h5n1 viruses. the analysis revea ... | 2010 | 20373998 |