the cells grown in the presence of hypothyroid calf serum which contained very low levels of thyroid hormones ( t4 ( thyroxine ) , 1.2 microgram/ml ; t3 , less than 25 ng/100 ml ) compared to normal serum ( t4 , 5.8 microgram/ml ; t3 , 110 ng/100 ml ) showed a diminished synthesis of myelin-associated glycolipids .
C0020676
hypothyroid
C0040165
thyroxine