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- W1844394089 abstract "Following infection of mice with larvae of the canine roundworm Toxocara canis, there is a persistent pneumonitis. Heretofore, nothing was known about the immunologic potential of the cells that constitute this inflammatory exudate. By performing bronchoalveolar lavage (BAL), enough inflammatory cells were obtained to compare the local pulmonary immune response to T. canis infection with the systemic immune response as reflected in the peripheral blood and spleen cells of the same mice. Groups of C57BL/6J female mice were given 100 infective ova and BAL, peripheral blood, and spleen cells collected on days 8, 11, 14, and 17 postinfection. The percentage of eosinophils in the BAL averaged about 80% and was four to five times as great as that in the peripheral blood at all times assayed. Use of concanavalin A (ConA)-elicited lymphocyte blastogenesis to evaluate T-lymphocyte activity revealed that BAL T-cell activity was low on day 8 and peaked on day 11. When the B-cell mitogen lipopolysaccharide was used in the assay, there appeared to be far less BAL cell reactivity compared with BAL T-cell activity. Both B- and T-cell responses of the BAL cells were only a fraction of the responses seen concurrently in spleen cells. Use of Toxocara exoantigens in the blastogenesis assay revealed that Toxocara exoantigens could elicit between 20 and 95% of the ConA response in BAL cells, while in spleen cells Toxocara exoantigens could only elicit 1 to 5% of the ConA response. These results suggest that BAL is a useful method for recovering local inflammatory cells that possess detectable immunologic activity. In the case of pulmonary toxocariasis, eosinophils account for the majority of the cells that are present, with most of the remaining cells being T. canis antigen-specific T lymphocytes." @default.
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- W1844394089 date "1987-09-01" @default.
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- W1844394089 title "Use of bronchoalveolar lavage to compare local pulmonary immunity with the systemic immune response of Toxocara canis-infected mice" @default.
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- W1844394089 doi "https://doi.org/10.1128/iai.55.9.2132-2136.1987" @default.
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