3d image of norgesterone skeletal formula

norgesterone norvinodrel vinylestrenolone vinilestrenolone vinylnoretynodrel progestogen progestin birth control pills women estrogen ethinylestradiol synthetic agonist progesterone receptor pregnancy rendering contraception control hormonal oral contraceptives mother gynecology obstetrics woman motherhood birth fertility fertility medicine reproduction reproductive female sex hormone menopausal hormone therapy gynecological conditions art assisted reproductive technology infertility hormonal replacement function action endocrine endocrinology level prohormone analogue