title: A new histogenetic method for minor histocompatability antigen typing.
abstract: A new method for typing minor H antigens is described. The method is based on the observation that effector T cells, sensitized in vivo to minor H mitigens and then rechallenged in vitro, will lyse labeled target cells in the CML assay, provided that the target, the sensitizing, and the responding cells share the same allele at H-2K or H-2D loci. In this method, two congenic lines differing at a minor H locus are cross-immunized (by skin grafting, injection of lymphoid cells, or, preferably, by a combination of both treatments), rechallenged in vitro, and tested against a panel of strains carrying the same H-2 haplotype as the two lines. Target cells of the panel carrying the same minor H antigens as the strain against which the effector cells were sensitized are lysed; target cells not carrying these antigens are unaffected. The feasibility of the method was demonstrated by testing for H-3 antigens of a panel fo H-2b-bearing strains. The new method is faster and more economical than the classicial F1 method which has been used until recently.
mesh_terms: D000818:Animals; D002874:Chromosome Mapping; D003601:Cytotoxicity Tests, Immunologic; D006084:Graft Rejection; D006649:Histocompatibility Antigens / Q000032:analysis*; D006650:Histocompatibility Testing / Q000379:methods*; D051379:Mice; D008805:Mice, Inbred A; D008807:Mice, Inbred BALB C; D008810:Mice, Inbred C57BL; D016038:Skin Transplantation; D014184:Transplantation, Homologous
chemical_list: D006649:Histocompatibility Antigens