Abstract: In this research we have studied the peripheral blood neutrophils phagocytosis and serum opsonic capacity by luminal excited chemiluminescence method. in 73 cases, who, evaluated in this research, none of them received any therapeutic drugs. All of cases, consists of 34 normal subject (female=l9, male=l5) and 18 patient control (included RA= 5, JRA=1, Polymyositis = 1, Behcet disease = 2, AS =3, Vascuiitis = 3 and scleroderma = 3) and 21 ...