Using monoclinal antibody technique,T lymphocyte cell subgroups,immunoglobins,comple- ments,and circulating immune complexes(CIC)were measured in 60 patients with pigmentary degeneration of retina(RP)and 40 normal subjects.The results indicated that T_1,T_4,T_8,T_3,C_3and C_4 of the patients were lower than those of the controls;T_4/T_8,IgM and CIC of the patients were more than those of the controls.The differences between the patients and the controls were remarkably significant.Similarly,by investigating the objective quota of TCM differenti...