What are the various forms of estrogens?
EstrONE (E1)– when menses are all gONE. i.e predominantly in post-menopausal women, [JIPMER 92] secreted from adipose tissue and the substrate is adrenal steroids.
EstraDIol (E2) – During Intermenstural period, i.e. predominant estrogen in menstruating women from granulose cells of follicles.
EsTRIole (E3) – predominant estrogen in TRImesters of pregnancy from placenta. The substrate is DHEAS from fetal adrenal.