Immunoglobulin E Production in the Absence of Interleukin-4-Secreting CD1-Dependent Cells

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Science  14 Feb 1997:
Vol. 275, Issue 5302, pp. 977-979
DOI: 10.1126/science.275.5302.977

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A lymphocyte population that expresses surface markers found on T cells and natural killer (NK) cells secretes large amounts of interleukin-4 (IL-4) immediately after T cell receptor ligation. These NK-like T cells are thus thought to be important for the initiation of type 2 T helper cell (TH2) responses. CD1-deficient mice were found to lack this lymphocyte subset, but they could nevertheless mount a protypical TH2 response; after immunization with antibody to immunoglobulin D (IgD), CD1-deficient mice produced IgE. Thus, although dependent on CD1 for their development, IL-4-secreting NK-like T cells are not required for TH2 responses.

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