title: [Serum opsonization activity in children with recurrent respiratory tract infections].
mesh_terms: D002675:Child, Preschool; D006801:Humans; D007223:Infant; D009895:Opsonin Proteins / Q000276:immunology*; D012008:Recurrence; D012141:Respiratory Tract Infections / Q000276:immunology*
chemical_list: D009895:Opsonin Proteins
vernacular_title: Aktywność opsonizacyjna surowicy u dzieci chorych na nawracajace zakazenia układu oddechowego.