In article the data, concerning features of cellular composition, proliferative activity and cytokines production of peripheral blood lymphocytes is presented in patients with various clinico-pathogenetic variants of pulmonary tuberculosis: drag-sensitive and drug-resistant infiltrative, disseminated, fibrous-cavernous. It is established that the extensive destructive tuberculosis without dependence from the clinical form of disease is accompanied by the expressed insufficiency of the cellular-mediated mechanisms of immunological resistance both to drag-sensitive, and to drug-resistant M. tuberculosis against quantitative prevalence of B-lymphocytes and intensity of their functional activity.