title: Letter: Cystic fibrosis and HL-A antigens.
mesh_terms: D000293:Adolescent; D001789:Blood Group Antigens; D002648:Child; D002675:Child, Preschool; D003550:Cystic Fibrosis / Q000097:blood / Q000235:genetics / Q000276:immunology*; D003601:Cytotoxicity Tests, Immunologic; D005006:Ethnicity; D005796:Genes; D006649:Histocompatibility Antigens / Q000032:analysis*; D006801:Humans; D007223:Infant; D010641:Phenotype
chemical_list: D001789:Blood Group Antigens; D006649:Histocompatibility Antigens