Herpes virus type 1 and 2 antigens were detected in cells originating from malignant tumors with oromaxillofacial localization. A higher incidence of type 1 antigens was noted, as compared to the type 2. Investigated antigens were detected more frequently in the tumors of ectodermal origin. Antiherpesvirus FC antibodies were found in 74.5% of the tumor bearing subjects, but only in 22.3% of the controls.
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