Ultrastructural changes in thyrocytes exposed to the antithyroid preparations betazin and diiodotyrosine

: Ultrastructure changes in the thyroid gland cells of rats were studied when feeding of bethazine and diiodthyrozine to rats at doses 0.01, 0.1 and 1.0 mg/kg of body's weight for 12 months. The ultrastructure changes in thyrocytes typical both for hyper- and for hypofunction of the gland were revealed.