title: The HL-A system. Genetic and biological implications.
mesh_terms: D000941:Antigens; D002875:Chromosomes / Q000276:immunology*; D003434:Crossing Over, Genetic; D005796:Genes; D005826:Genetics, Medical; D006087:Graft vs Host Reaction; D006238:Haploidy; D006650:Histocompatibility Testing; D006801:Humans; D007106:Immune Sera; D007962:Leukocytes / Q000276:immunology; D008967:Molecular Biology; D012703:Serotyping; D014181:Transplantation Immunology
chemical_list: D000941:Antigens; D007106:Immune Sera