to investigate whether thyroid hormone acts through binding to nuclear receptors , we measured rna polymerase activities in isolated neuronal and glial nuclei of cerebral cortices prepared from three groups of rats with different t3 levels : t3 ( 20 micrograms/100 g bw/d , for three days ) -injected hyperthyroid rats , control normal rats , and thyroidectomized rats .
C0206588
nuclear receptors
C0007610
nuclei