[Experimental study of the immunological activity of a preparation made from the antigenic complexes of opportunistic...

The data obtained in the experimental study of the humoral factors of local and systemic immunity, as well as the morphofunctional changes of internal organs, after multiple subcutaneous and aerosol immunization with the combined preparation of Proteus, Staphylococcus, Klebsiella pneumoniae and Escherichia coli antigens (preparation nC-4) are presented. The subcutaneous and aerosol administration of preparation nC-4 has been found to induce an increase in the levels of antibodies to all components of the preparation in the blood serum and in respiratory tract secretions. The introduction of the preparation through the respiratory tract resulted in an earlier intensive accumulation of specific antibodies and IgA in respiratory tract secretions. The results of the quantitative cytological study of respiratory tract secretions and the morphofunctional changes of the lymphoid tissue associated with the lungs are indicative of an important role played by cell-mediated immunity factors in the formation of local postvaccinal immunity.