Differential susceptibility of neonatal and adult murine spleen cells to in vitro induction of B-cell tolerance.

Abstract
Adult cells required approximately 1000-fold more trinitrophenyl-human .gamma.-globulin to be rendered tolerant than did cells from 9- to 12-day-old neonates. The potential effects of suppressor T [thymus-derived] cells were excluded by pretreating the cultured B cells with anti-Thy-1 and C [complement], and the helper T cells with anti-Ly-2.2 and C''. The possible role of cell surface immunoglobulin isotypes in contributing to this observed difference is discussed.