Spontaneous and stimulated reaction of lymphocyte proliferation and blood levels of CD25- and CD120-expressing lymphocytes were studied in patients with autoimmune thyroiditis and diffuse toxic goiter. Activation of CD25- and CD120-presenting function of blood lymphocytes was revealed. The findings indicate that the course of autoimmune thyroiditis and diffuse toxic goiter is associated with increased levels of basal, mitogen- and cytokine-stimulated proliferation of blood lymphocytes, particularly pronounced in thyroiditis in the euthyrosis stage.
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