Article: Host-determined T cell fine specificity for self-H-2 in radiation bone-marrow chimeras of standard C57BL/6 (H-2(b)) mutantHz1 (H-2 (ba)), and F (1) mice

Reciprocal radiation bone-marrow chimeras were produced between the standard C57BL/6 (=B6) and the mutant B6.C-H-2 ( ba ) (=Hz1) strain. When infected with vaccinia virus, these chimeras, as well as an (Hz1 × B6)=→ Hz1 chimera, produced cytotoxic cells that killed vaccinia-infected H-2K(k)H-2D(b) target cells but failed to kill virus-infected H-2K(b)H-2D(d) cells. Virus-infected (Hz1 × B6)F(1) → B6 chimeras, however, killed both types of target. These experiments demonstrate strict T-cell specificity capable of differentiating between two molecules that apparently differ by a single amino acid substitution.

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Host-determined T Cell Fine Specificity for Self-H-2 in Radiation Bone-marrow Chimeras of Standard C57BL/6 (H-2(b)) MutantHz1 (H-2 (ba)), and F (1) Mice