[The effect of a distant tumor on the DNA content in the epitheliocytes of the oral mucosa].

Patients with malignant melanomas and breast cancer (83 men and women) were examined. On the basis of study of the DNA contents in nuclei of epitheliocytes from the mucous oral cavity, index of their nuclei heterogeneity we have revealed disturbances in maturation and differentiation of cells. They were arranged to the spinous layer of the oral mucosa. The disturbances were caused by the tumour influence on the functional state of the mucosa.