[Immunohistochemical study of cells of invasive cancer of the vaginal part of the cervix uteri].

Immunohistochemical study of cervical carcinoma used EE21-06d monoclonal antibodies which identify five cytokeratin polypeptides inherent in the squamous epithelium. PAP-method and reaction of immunofluorescence were employed. Initial stages of squamous cell carcinoma invasion were characterized by bleaching or complete cell discoloring of most tumor cells. However, in deeply invading tumors, the share of intensively stained cells was markedly increased. The results point to expression of different cytokeratins or cell clones replacement with tumor progression. The peculiarities of cytokeratin distribution may serve to determine the degree of invasion and differentiation of tumor cells.