the content of cytoplasmic and nuclear receptors for estradiol ( e2 ) in the preoptic anterior hypothalamus ( po ) and arcuate nucleus-medial eminance ( arc-me ) at varying day time ( 10 , 13 , 15 and 18 hours ) of each stage of the estrous cycle was examined .
C0010834
cytoplasmic
C0206588
nuclear receptors