title: HYBRID RESISTANCE TO PARENTAL MARROW GRAFTS:  ASSOCIATION WITH THE K REGION OF H-2.
abstract: Bone marrow of homozygous C57BL/10 donors was tested for growth in x-irradiated isogenic recipient mice, in (C57BL/10 X 129) F(1) mice, and in F(1) hybrids from congenic parents differing respectively, for an allelic substitution at one of the histocompatibility loci H-1, H-2, H-3, and H-4. All the tested H-2 heterozygotes resisted the transplantation of 10(4) parental marrow cells, whereas H-2 homozygotes were nonresistant, in spite of heterozygosity, at one or several other H loci. Findings in F(1) hybrids between C57BL/10 mice and mice carrying alleles resulting from crossing-over within the H-2 locus demonstrated that the hybrid resistance was associated with heterozygosity in the K region, but not in the D region of the H-2 locus.
mesh_terms: D000818:Animals; D001853:Bone Marrow; D016026:Bone Marrow Transplantation; D002875:Chromosomes; D004247:DNA; D006648:Histocompatibility; D007065:Idoxuridine; D007456:Iodine Isotopes; D051379:Mice; D008810:Mice, Inbred C57BL; D008815:Mice, Inbred Strains; D011830:Radiation Effects; D012106:Research; D014181:Transplantation Immunology
chemical_list: D007456:Iodine Isotopes; D004247:DNA; D007065:Idoxuridine
keywords: BONE MARROW TRANSPLANTATION; CHROMOSOMES; DNA; EXPERIMENTAL LAB STUDY; IDOXURIDINE; IODINE ISOTOPES; MICE; RADIATION EFFECTS; TRANSPLANTATION IMMUNOLOGY