[Significance of immunological investigation in pulmonary pathology].

An extensive range of investigations were used in a comparative study of immune reactivity in the tuberculous pulmonary pathology, as well as in sarcoidosis, pneumonia and cancer of the lungs. T and B lymphocyte populations were followed, indexes of leucocyte migration, induced lymphoblastogenesis to phytohaemagglutinin, and the serum levels of immunoglobulins. Also the intensity of the hypersensitivity to tuberculin was investigated, to allergens extracted from staphylococcus and streptococcus strains, as well as against organ antigens (pulmonary tissues).