title: Plasma 20alpha-dihydroprogesterone, progesterone and 17-hydroxyprogesterone: daily and four-hourly variations during the menstrual cycle.
mesh_terms: D004092:20-alpha-Dihydroprogesterone / Q000097:blood*; D002940:Circadian Rhythm; D005260:Female; D005498:Follicular Phase; D006801:Humans; D006908:Hydroxyprogesterones / Q000097:blood*; D008183:Luteal Phase; D007986:Luteinizing Hormone / Q000097:blood; D008598:Menstruation; D010060:Ovulation; D011374:Progesterone / Q000031:analogs & derivatives* / Q000097:blood*
chemical_list: D006908:Hydroxyprogesterones; D004092:20-alpha-Dihydroprogesterone; D011374:Progesterone; D007986:Luteinizing Hormone