Isotype profiles of anti-influenza antibodies in mice bearing the xid defect.
The humoral response to influenza A/PR8 virus was examined in the CBA/N and C3J.xid strains of mice, both of which bear an X-linked genetic defect (xid), and in strains lacking this defect. Hemagglutination-inhibiting antibody titers and measurement of virus-specific antibodies by solid-phase radioimmunoassay indicated that the xid defect does not impair the production of an adequate anti-influenza antibody response. However, investigation of the isotypes of PR8 virus-specific antibodies disclosed a relative decrease in the levels of IgG3 and IgG1 in the xid-bearing strains. This was observed after both intraperitoneal immunization and aerosol infection. The isotype differences were not reflected in the susceptibility of these strains to influenza virus infection.
16 references, click to expand
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