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J. Virol., Mar 1997, 2518-2521, Vol 71, No. 3
XY Mo, MY Sangster, RA Tripp and PC Doherty
Homozygous disruption (-/-) of the interleukin-4 (IL-4) gene did not
obviously modify the severity of Sendai virus infection in the highly
susceptible 129/J mouse strain. The virus was cleared from the respiratory
tract, and potent cytotoxic T lymphocyte (CTL) effectors were present in
the cell population recovered by bronchoalveolar lavage. However, the
prevalence of virus-specific CTL precursors (p) was consistently diminished
in the spleen and regional lymph nodes of the IL-4 -/- mice at day 7 after
infection. Also, virus-specific serum immunoglobulin G1 (IgG1) levels were
greatly reduced and few IgG1- producing cells were detected in the lymphoid
tissue. The effect on IgG1 class switching was to be expected, but the
decrease in CTLp numbers has not been observed previously for a
virus-specific immune response.
Copyright © 1997, American Society for Microbiology
Modification of the Sendai virus-specific antibody and CD8+ T-cell responses in mice homozygous for disruption of the interleukin-4 gene
Department of Immunology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.
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