releasing hormone: any of several hormones produced in the hypothalamus and carried by a vein to the anterior pituitary gland where they stimulate the release of anterior pituitary hormones; each of these hormones causes the anterior pituitary to secrete a specific hormone
hormone: the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
brand-name drug: a drug that has a trade name and is protected by a patent (can be produced and sold only by the company holding the patent)