Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Progestogens (also spelled progestagens or gestagens) are a group of hormones including progesterone. The progestogens are one of the five major classes of steroid hormones, in addition to the estrogens, androgens, mineralocorticoids, and glucocorticoids. All progestogens are characterized by their basic 21-carbon skeleton, called a pregnane skeleton (C21). In similar manner, the estrogens possess an estrane skeleton (C18) and androgens, an andrane skeleton (C19). Progestogens are named for their function in maintaining pregnancy (pro-gestational), although they are also present at other phases of the estrous and menstrual cycles. The progestogen class of hormones includes all steroids with a pregnane skeleton, that is, both naturally occurring and synthetic ones.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.