a female hormone, produced by the ovaries, adrenal glands and in fat. A relationship exists between oestrogens and breast cancer.
a group of steroid hormones which are secreted mainly by the ovary and placenta. They promote the growth and function of the female sex organs and secondary sexual characteristics. Oestrogens also stimulate changes in the female sex organs during the menstrual cycle.
one of the female sex hormones produced by the ovaries.