[Biological effect of brown coal dust on the bronchopulmonary system and immunocompetent organs (experimental morphological study)].

Inhalation of the brown coal samples caused anthracosis with progressive growth in the postinhalation period and concomitant catarrhal-desquamative bronchitis, lymphoid tissue hyperplasia, emphysema, along with granuloma formation. The cases studied were marked with increased number and thickness of the argyrophile and reticuline fibres around the bronchi, vessels, granuloma and in the interalveolar septum. Changes were detected in the immunocompetent organs' state which might influence the homeostasis and the immune system. Complex cytomorphological investigation of the bronchopulmonary and immunocompetent systems can be applied to in biological studies of different aerosols.