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  • Title: Immunologic response to influenza virus neuraminidase is influenced by prior experience with the associated viral hemagglutinin. III. Reduced generation of neuraminidase-specific helper T cells in hemagglutinin-primed mice.
    Author: Johansson BE, Moran TM, Bona CA, Kilbourne ED.
    Journal: J Immunol; 1987 Sep 15; 139(6):2015-9. PubMed ID: 2957444.
    Abstract:
    In BALB/c mice primed by influenza virus infection to H3 hemagglutinin and N2 neuraminidase, presentation of N2 in association with a heterosubtypic (H7) hemagglutinin results in production of a greater amount of N2 antibody than is found with homologous (H3N2) reimmunization. Titration of primed helper T cell (Th) activity by adoptive transfer of purified T cells to athymic mice given H6N2 vaccine demonstrates a lesser number of N2-specific Th cells in mice subjected to homologous reimmunization. We conclude that Th cells participate in the mediation of intermolecular (intravirionic) antigenic competition between influenza virus hemagglutinin and neuraminidase.
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