Study of the proliferative potential and immunophenotype of lymphocytes and cytokine-producing capacity of mononuclear cells in patients with chronic tick-borne encephalitis virus antigenemia showed changes in T cell lymphoproliferative response, relative content of T cells and T helper inductors, immunoregulatory index, and imbalance in the production of immunoregulatory Th1 and Th2 cytokines.

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The aim of this work was to assess the lymphocyte transformating responses to stimulation with antigens or mitogens in chronic opisthorchiasis patients with low and high degrees of infection intensity. The heavily infected patients demonstrated the lowest levels of stimulated lymphocyte transformating response in vitro, and CD8+ or CD16+ counts in peripheral blood.

The structure of lymphocyte and erythrocyte plasma membrane in patients with long persistence of tick-borne encephalitis virus was studied using fluorescent probes pyrene and 1-anilinonaphthalene-8-sulfonate. The authors analyze the clear-cut disorders in the membranes of both lymphocytes and erythrocytes in viral tick-borne-encephalitis from the viewpoint of generalized involvement of cell membranes in infectious process.