ABSTRACT
In this paper,we reported that T cell,T cell subpopulation and natural killer(NK)cell activities of peripheral blood lymophocytes from the Fatients with tumor weredetected with OKT monoclonal antibody and ~(51)Cr release cytotoxity test.The resultsshowed that percentage of OKT3~+,OKT4~+ cell in the peripheral blood of patients withtumor are low,OKT8~+ is high and the ratio of OKT4/OKT8 is low.The results haveproved that the ratio of OKT4/OKT8 and NK cell activities were significantly low inthe peripheral blood of patients with tumor.However,the activities have restored tonormal or near normal level in the patients after surgical operation for more that twoyears with no recurrence. Our data suggest that detecting of the ratio of OKT4/OKT8 and activities of NKcell might be valuable to the prognosis of patients with tumor.