Endothelin in human brain and pituitary gland: presence of immunoreactive endothelin, endothelin messenger ribonucleic acid and endothelin receptors. - Takahashi,K.; Ghatei,M.A.; Jones,P.M.; Murphy,J.K.; Lam,H.; O'Halloran,J.D.; Bloom,S.R. (J Clin Endocrinol Metabol, 1991)