The cell mediated immunity was examined by the leukocyte adherence inhibition (LAI) test in 21 patients with CIN III and 146 patients with invasive gynaecologic malignancies before treatment and at 3-month intervals. Our own LDV antigen and organ specific antigens were used. The test was highly specific (95.1%) in comparison with a control group of healthy blood donors. The sensitivity of the test was lower (64.7-86.8%). There was no correlation with the development of disease (remission or relapse). The test in a two-year investigation does not seem suitable for monitoring of disease. Depending the nature of LDV infection, only a longer investigation extending over more years would enable further conclusions.