The induction of specific resistance in F1 hybrid rats to local graft‐vs.‐host reactions: nature of the eliciting cell

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Abstract
A specific state of resistance to local graft-vs.-host (GVH) reactions can be induced in F1 hybrid rats, derived from Ag-B incompatible matings, as a consequence of inoculation with low numbers of parental strain lymphocytes. The magnitude of GVH resistance is markedly and directly dependent upon the number of parental strain lymphocytes used in the pretreatment regimen. The relevant constituents of the resistance-inducing parental cell population are thymus-derived (T) lymphocytes possessing immunologic competence for host alloantigens. B cells, themselves incapable of inducing GVH resistance, adversely effect the induction or display of this effect by T cells.