[The immune system in dust-induced bronchitis].

Studies of the immunity in 233 patients with dust-induced bronchitis (DIB), engaged in machine building, have revealed essential shifts in the T and B immunity systems, that were related to the severity and clinical features of the disease. The authors have set up the criteria for defining the normal range of values and the range of immunologic values characteristic of DIB; this helped detect the disordered immunity parameters in each of the examined patients. A method for the diagnosis of the immunity disorders in DIB patients is suggested, making use of just two characteristics, the per cent share of active T and B lymphocytes and their ratio, this essentially simplifying and accelerating the investigation.