Sendai virus-specific, H-2-restricted cytotoxic T lymphocyte responses of nude mice grafted with allogeneic or semi-allogeneic thymus glands.

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Abstract
The in vitro secondary cytotoxic T lymphocyte (CTL) response to Sendai virus-treated stimulator cells by primed spleen cells from thymus gland-grafted nude mice was examined. BALB/c (H-2d) nude mice grafted with allogeneic C57BL/10 (H-2b) thymus glands developed CTL responses directed exclusively to Sendai virus-infected H-2d target cells. (C57BL/6 .times. BALB/c)F1 nude mice grafted with thymus glands of either parent developed CTL responses preferentially against infected target cells expressing the MHC [major histocompatibility complex] antigens present in the parental thymus graft, but also had detectable activity for infected target cells of the parental haplotype not expressed in the thymus. This provides evidence against the concept that self recognition by MHC-restricted CTL is directed exclusively by the MHC type of the thymus.