脊椎动物脑下部的脑下垂体这种小组织,虽然人的重量只有0.5克,鲑鱼的重量只有0.05克,但却可产生对动物的生存和繁殖不可缺少的10种激素。生长激素是其中的一种,顾名思义,就是促使动物生长的激素。若人体内的生长激素不足,就会患矮人症,这种症状可用人的生长激素治疗。另外,已知如果对鱼或家畜注射牛的生长激素,就可促使生长。但由于从脑下垂体精制 Pituitary gland in vertebrate subepithelium This small tissue, although human weighs only 0.5 grams and salmon weighs only 0.05 grams, produces 10 hormones that are essential for the survival and reproduction of animals. Growth hormone is one of them, as the name implies, is the hormone that promotes animal growth. If the body’s lack of growth hormone, it will suffer from dwarfism, this symptom can be treated with human growth hormone. In addition, it is known that if a cow’s growth hormone is injected into fish or livestock, growth is promoted. But due to the pituitary gland refined