title: HA cleavage site mutation in bird flu virus in Thailand: relation to pathogenic degree and further surveillance.
authors.forename: Viroj
authors.initials: V
authors.lastname: Wiwanitkit
mesh_terms: D000818:Animals; D001717:Birds; D005819:Genetic Markers; D006388:Hemagglutinins / Q000235:genetics*; D006801:Humans; D053124:Influenza A Virus, H5N1 Subtype / Q000235:genetics*; D005585:Influenza in Birds / Q000821:virology*; D009154:Mutation / Q000235:genetics*; D020539:Sequence Analysis, Protein; D013785:Thailand
chemical_list: D005819:Genetic Markers; D006388:Hemagglutinins