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American Journal of Pathology, Vol 105, 156-163, Copyright © 1981 by American Society for Investigative Pathology

REGULAR ARTICLES

Sendai virus infection in genetically resistant and susceptible mice

DG Brownstein, AL Smith and EA Johnson

The pathogenesis of Sendai virus infection in genetically resistant (C57Bl/6) and susceptible (DBA/2) nonimmune adult mice was investigated. Rising serum complement-fixation (CF) antibody titers were delayed in DBA/2 mice as compared with C57Bl/6 mice. C57Bl/6 mice developed descending desquamative endobronchiolitis, and DBA/2 mice developed descending proliferative endobronchiolitis and bronchogenic alveolitis. Peribronchiolar lymphoid cuffs that formed in C57Bl/6 mice were thicker and more densely populated than those of DBA/2 mice. Immunofluorescence demonstrated viral antigens confined to the epithelial lining of conducting airways in C57Bl/6 mice but extending to alveolar corner cells in DBA/2 mice. Studies with a transmission electron microscope confirmed that Type II pneumocytes were infected only in DBA/2 mice. IgG-containing cells selectively accumulated along the airways of both strains, but fewer were recruited by DBA/2 mice. These results suggest that genetic resistance to Sendai virus is expressed through the immune system.


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Copyright © 1981 by the American Society for Investigative Pathology.