title: Serum complement levels in patients with head and neck cancer.
mesh_terms: D003165:Complement System Proteins / Q000032:analysis*; D006258:Head and Neck Neoplasms / Q000276:immunology*; D006801:Humans; D009362:Neoplasm Metastasis / Q000276:immunology; D009364:Neoplasm Recurrence, Local / Q000276:immunology; D011379:Prognosis; D014374:Tuberculin Test
chemical_list: D003165:Complement System Proteins