[Antibodies interacting with the proteins of the mammary cancer virus (MMTV) in the sera of healthy women].

Using enzyme-linked immunoassay (ELISA), sera of 405 women without breast cancer were screened for the presence of antibodies to mouse mammary tumour virus proteins. 16 donors with positive sera were identified (3.96 +/- 0.97%). An attempt was made to establish the correlation between the age, ovarian Activity, benign breast disease and other factors and the appearance of antibodies to mouse mammary tumour virus. No statistically significant differences have been revealed among women aged 20-29 (3.92%), 30-39 (4.69%), 40-49 (4.08%) and 50-59 (2.38%), as well as in premenopausal (4.31%) and postmenopausal (4.5%) women and women with simple fibromatous disease (4.76%) and without any mammary gland pathology.