The biphasic pattern in the feedback action of ethinyl estradiol on the release of pituitary FSH and LH.
D000328:Adult; D002940:Circadian Rhythm; D004997:Ethinyl Estradiol / Q000494:pharmacology*; D005246:Feedback; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood / Q000378:metabolism*; D006801:Humans; D007986:Luteinizing Hormone / Q000097:blood / Q000378:metabolism*; D008593:Menopause; D008875:Middle Aged; D011863:Radioimmunoassay
D004997:Ethinyl Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone