to examine for the potential regulation of proenkephalin gene expression by steroid hormones in a primate displaying a menstrual cycle and to define the functional tissue within the uterus expressing this transcript , we have used northern blot analysis of extracted rna from isolated uterine tissue subtypes from normal adult rhesus macaques obtained during the menstrual cycle and from ovariectomized females under different physiological steroid hormone treatments .
C0042149
uterus
C0025329
menstrual cycle