title: Allelic exclusion and nonproductive immunoglobulin gene rearrangements.
mesh_terms: D000483:Alleles; D000818:Animals; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology; D002875:Chromosomes / Q000502:physiology; D004247:DNA / Q000235:genetics*; D005796:Genes; D006801:Humans; D007136:Immunoglobulins / Q000235:genetics*
chemical_list: D007136:Immunoglobulins; D004247:DNA