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pubmed:abstractText |
We demonstrate here: (a) the existence of T helper (Th) cells that augment the generation of virus-specific cytotoxic T cells in vitro, (b) that the helper cells carry the theta and Ly 1 membrane antigens, (c) that activation of the Th effect is specific for viral antigens, and (d) that the delivery of help is not H-2 restricted.
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