Curtis, K.

fetus activity cortisol tissue plasma deiodinase concentration hormone 3 activity infusion sheep thyroid 1 activity figure 144 days gestation plasma cortisol hepatic effect control 1 activities change prepartum endocrinol saline 130 days difference physiol sample placental liver sheep fetuses ax fetuses sheep fetus thyroid hormones table plasma t 3 prepartum cortisol surge placenta enzyme 3 activities study cortex kidney glucocorticoid iodothyronine ovine cortisol-infused fetuses 2 activity t 3 production thyroid hormone metabolism control fetuses utero development increase level assay deiodination deiodinase activity exogenou surge fmol min iodothyronine deiodinases group adrenalectomy protein fowden radiometric enzyme assay t 3-infused fetuses thyroxine homogenate t 3 concentrations tissue deiodinase activity 37 oc value metabolism number ovine fetus ring deiodination production