[Cellular immunity indices in primary cancer and nontumorous diseases of the liver].

By means of a delayed hypersensitivity reaction to 2,4 DNCB, tuberculin and quantitation of T-RFC it was shown that cell immunity indices in primary hepatic cancer are reduced to a greater extent than in persons with nontumor lesions. Persistant opisthorchosis invasion is of great significance in impairing the cell immunity in man, which is an immunological support to the idea of opisthorchosis being precancer of the liver.