title: [Concept and definition of heavy chain diseases].
mesh_terms: D006362:Heavy Chain Disease / Q000473:pathology; D006801:Humans; D007137:Immunoglobulin alpha-Chains; D007148:Immunoglobulin mu-Chains
chemical_list: D007137:Immunoglobulin alpha-Chains; D007148:Immunoglobulin mu-Chains
vernacular_title: Concepto y delimitación de las enfermedades de cadenas pesadas