ABSTRACT
Materials and Methods: lymphocytes of 10 pa-tients having early rheumatoid arthritis (RA) (the duration of the illness was 3 - 6 months) with a marked exudational process in joints were ex-amined. The content of lymphocytes expressing the CD3, CD4, CD8, CD16, CD56, CD20, CD72, CD38, CD23, CD25, CD71, HLA-DR, CD95, CD30, CD54, mIgM, mIgG antigens was determined. Results: the “Taban-Arshan” extract corrects the changes of the immune system characterized by the evident activation of the B-cell part of the immune system and normalizes immune parameters of the lymphocytes taken from the patients with autoimmune diseases (early rheumatoid arthritis). The immunocorrective effect of the “Taban-Arshan” extract is related to its ability to suppress the lymphocyte increased activation by normalizing expression of the main activation antigens (CD23, CD25, CD71, HLA-DR, CD54).