Gonadotropins
Gonadotropins are hormones produced by the pituitary gland which stimulate the sex glands to produce sex hormones and produce sperm or ova. The main gonadotropins are follicle stimulating hormones (FSH), and luteinizing hormones (LH) which in turn stimulate testosterone production (in men) and estrogen and progesterone production (in women). The human chorionic gonadotropin is only produced during pregnancy. These hormones are also employed in fertility treatments in inducing ovulation and increasing sperm count.