title: Tonsillectomy and serum immunoglobulin concentration.
mesh_terms: D000917:Antibody Formation; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007136:Immunoglobulins / Q000302:isolation & purification*; D014066:Palatine Tonsil / Q000276:immunology; D014068:Tonsillectomy
chemical_list: D007136:Immunoglobulins