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根据目前对甲状腺激素活性的见解,基本上是通过T_3细胞核受体的浓度来判定特定组织对甲状腺激素的敏感性的。在个体发育时期,对受体研究是很重要的,因为这可能明确地显示出在胚胎时期某些组织是甲状腺激素潜在的靶组织,它与人脑关系尤为密切、甲状腺激素在脑发育中是必不可少的,但是在子宫内,胎儿脑发育是否依赖于甲状腺激素尚不清楚,在兔、大鼠,人和鸡的胚胎组织中
According to the current knowledge of thyroid hormone activity, is basically through the T_3 nuclear receptor concentration to determine the specific organization of thyroid hormone sensitivity. Recipient studies are important at the time of individual development as this may clearly show that certain tissues are potential target tissues for thyroid hormones during embryonic life and are particularly associated with the human brain and thyroid hormones are Essential, but it is unclear whether fetal brain development depends on thyroid hormone in the uterus. In embryonic tissues of rabbits, rats, humans and chickens