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[Study of multiregression analysis on NK activities and related clinical factors in patients with head and neck neoplasms].

NK activity in patients with head and neck neoplasms treated with radiation and chemotherapeutics was studied on the influence of 19 factors by using the method of multiregression analysis. Of these factors, BUN, WBC, the size of radiation portal, chemotherapy, radiation doses, total protein (T.P.), age and GOT were significantly influenced on the fluctuation of NK activity (p less than 0.05). In the studies of the size of radiation portal and its doses, NK activity showed a tendency to increase with radiation dose in small size of radiation portal and a tendency to reduce in large size of it.