[Antibodies to Bacillus megaterium H glycoprotein in patients with lung diseases].

Enzyme immunoassay performed in patients with malignant and benign affections of the lungs determined antibodies (Abs) to glycoprotein isolated from saprophyte microorganism Bacilus megaterium H. In pulmonary tuberculosis and nonspecific pulmonary inflammation the above Abs occurred in patients with fibrous-proliferative changes and associated neoplastic conditions. In lung cancer the Abs were detected in well and moderately differentiated tumors. Nondifferentiated and poorly differentiated variants did not exhibit any rise in Abs to glycoprotein.