Abstract
An anti-idiotypic serum was prepared by injecting BALB anti-AKR serum into (BALB X AKR)F1 mice. Pretreatment of BALB anti-AKR immune cells with this anti-idiotypic serum plus complement abrogated a leucocyte migration inhibition reaction (LMIR) against AKR extracts but not against purified protein derivative By itself, the serum induced LMIR in immune cells but not in normal cells. The reaction was strain-specific and anti-Thy 1,2 plus complement sensitive. These results indicate that alloantigen receptors, able to trigger in LMIR in immune cells, have idiotypic determinants similar to those of circulating antibodies of the same specificity. Thus the LMIR is a good model for the study of receptors cell-mediated immune reactions of primed cells.
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