Recently, a novel protein in the influenza virus segment 3 has been identified, namely PA-X. This small protein has been reported to play a role in modulating host response of the 1918 H1N1 pandemic v
Inbred C57BL/6 female mice (8-10 weeks old) were immunized subcutaneously according to the 8 immunization groups. Serum samples were collected weekly from 2 staggered groups and analyzed for PA-specif
