hypopituitary hypothyroidism , evidenced by decreased serum thyroxine ( t ( 4 ) ) and thyroidal ( 131 ) i uptake and by the histologic appearance of large follicles with flat cells , was found in the btshbeta- and btsh-immunized animals , despite the presence of thyroid-stimulating activity in the serum of many .
C0020676
hypothyroidism
C0040132
thyroid