We used an antiidiotypic antibody directed against a Sendai virus-specific T helper cell clone to stimulate an immune response in vivo. In addition, the antiidiotypic antibody induced T cells that mediated a delayed-type hypersensitivity (DTH) response in several different mouse strains. Induction of the DTH response by the antiidiotypic antibody, in contrast to the DTH responses induced by virus, demonstrated a remarkable lack of H-2 restriction.

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