Use of cytokin-containing aerosols and the cytokin-containing aerosols

A method of administrating to patients having infections, immunodeficiency syndromes, inflammatory diseases, autoimmune diseases, foreign body transplants, or requiring immuno regulation of tumor diseases, which method comprises causing such a patient to inhale an aerosol composition, which aerosol composition consists essentially of a solution of a cytokin and a pharmaceutically acceptable carrier therefor wherein the pharmaceutically acceptable carrier is human serum albumen and a component selected from the group consisting of one or more of a pharmaceutically acceptable salt solution, and a pharmaceutically acceptable buffer.