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- W1570348477 abstract "Abstract The role of T cells in immunity to murine schistosomiasis was examined through the use of T cell clones that recognize the live schistosomulum stage of Schistosoma mansoni. T cell clones of three different phenotypes were isolated and expanded into long term culture from lymph nodes of C57B1/6J mice vaccinated with irradiated S. mansoni larvae. They were characterized by surface markers, lymphokine production, and functional assays. The m.w. range of the Ag recognized by one clone was identified through nitrocellulose blotting and confirmed with a preparation of the putative protein made by immunoaffinity purification. All but one of the clones were CD4+, CD5+, Th cells. One clone, 35, produced Il-2 and IFN-gamma and was designated a TH1 clone. The others were designated TH2 clones because of Il-4 production. One clone was CD8+ and failed to show help. Clone 35 recognized live schistosomula and produced Il-2 when presented a 27-kDa protein from nitrocellulose. It proliferated in response to purified Ag. Clone 35 participated along with macrophages to induce up to 98% killing of live schistosomula in vitro. IFN-gamma and TNF-alpha were essential to the killing mechanism whereas Il-1, Il-2, and Il-4 were not required. This study has approached Ag identification for vaccine development from the point of view of T cells and showed that TH1 cells are essential to in vitro macrophage killing of schistosomula in murine schistosomiasis." @default.
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- W1570348477 date "1990-04-01" @default.
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- W1570348477 title "T cell clones for antigen selection and lymphokine production in murine Schistosomiasis mansoni." @default.
- W1570348477 doi "https://doi.org/10.4049/jimmunol.144.7.2757" @default.
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