Cytotoxic T lymphocytes (CTL) specific for self immunoglobulin (Ig) determinants on B lymphocytes were successfully generated. These CTL were induced with stimulator B hybridoma cells bearing self Ig determinants in responders compatible with the stimulators in H-2 antigens but disparate in minor H antigens. Their specificities were directed toward the idiotype and probably the allotype structures of Ig receptors on stimulator B cells. However, no CTL specific for Ig structures other than the idiotype and the allotype were detected. These data indicate the presence of specific precursor CTL for self B cell clones and suggest the possible development and function of these CTL in certain situations.

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