Polymorphism of Qa and Tla loci of the mouse.

Congenic lines carrying H-2 haplotypes derived from wild mice were typed serologically with polyclonal and monoclonal antibodies specific for Tla, Qa-1, and Qa-2 antigens. The typing revealed the presence of a minimum of five Tla, four Qa-1, and three Qa-2 alleles in the 32 lines. Two new Tla, two new Qa-1, and one new Qa-2 alleles could be described. This polymorphism of Tla and Qa loci is lower than that detected at the K and D loci in the same lines. The serological typing for Qa-2 antigens correlates remarkably well with previously published results of typing with cytolytic T lymphocytes. This correlation supports the identify of loci detected by the two methods.