title: [The major OLA histocompatibility complex of sheep. Recent results in the genetic study of 11 factors previously defined by microlymphocytotoxicity].
abstract: The genetic study of 11 lymphocyte factors previously described in sheep was continued. 9 factors are the products of alleles at two closely linked loci OLA-A and B. The last two factors are the products of two genes at two distinct loci OL-X and OL-Z. Recombinations between the two closely linked loci are very rare (0.6%); but they are frequent between these two loci and OL-X (26%). The OL-Z locus seems to be independent of the two linked loci OLA-A and B. The allele frequencies at the four loci are given.
mesh_terms: D000483:Alleles; D000818:Animals; D000939:Epitopes; D005260:Female; D005787:Gene Frequency; D006649:Histocompatibility Antigens / Q000032:analysis*; D011995:Recombination, Genetic; D012756:Sheep / Q000276:immunology*
chemical_list: D000939:Epitopes; D006649:Histocompatibility Antigens
vernacular_title: Le complexe majeur d'histocompatibilité OLA du mouton. Nouveaux résultats dans l'étude génétique de 11 facteurs précédemment décrits grâce a la microlymphocytotoxicité.