The pituitary is a small endocrine gland which produces and secretes hormones vital to the regulation of various bodily functions. Hormones secreted by the pituitary stimulate and control the functioning of almost all other endocrine glands as well as the growth and water balance of the body. In vitro studies demonstrate that bovine pituitary extract (BPE) promotes epithelial cell and melanocyte proliferation [1, 2]. BPE has been widely used as an additional supplement in the culture of various epithelial cells and melanocytes.