Objective:The purposes of the present study were to explore the role of CTLA-4in the pathogenesis on development of chronic tonsillitis,and to provides new possibilities and theoretical basis for the drug therapy of chronic tonsillitis and,from soft regulation of the inflammatory immune response point of view.Method:Tonsil tissues were obtained by tonsillectomy and classified into two groups according to clinical forms of tonsillitis,CT(chronic tonsillitis)group(n=21)and TH(hypertrophy of tonsil)group(n=15)...