Influenza A and B are the two types of influenza viruses that cause epidemic human disease. Influenza type C infections cause a mild respiratory illness and are not thought to cause epidemics. Influenza A viruses are further categorized into subtypes on the basis of two surface antigens: hemagglutinin (H) and neuraminidase (N). Strains are also described by geographic origin, strain number and year of isolation.
应用类型
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免疫原
Purified recombinant fragment of Influenza A virus nucleoprotein (AA: 2-498) expressed in E. Coli strain BL21(DE3)
