Disorders of bronchopulmonary processes is one of the leading case among the factors that affect human vital activity. In the conditions of high concentration of fibrogenic dust with silicon dioxide in the air of the working zone the time of development of the violations of the bronchopulmonary system can be significantly reduced. The immune system determines the body’s resistance to the effects of various professional and environmental factors. It has been found that the dynamics of cellular immunity violations in persons that work under harmful conditions has a certain pattern, depending on the concentration of industrial dust and the duration of contact with it. A quantitative redistribution of certain sub-populations of T-lymphocytes and a decrease in their functional activity were recorded in the examined individuals.
