Ghrelin, a novel growth hormone-releasing acylated peptide, is synthesized in a distinct endocrine cell type in the gastrointestinal tracts of rats and humans. - Date,Y.; Kojima,M.; Hosoda,H.; Sawaguchi,A.; Mondal,M.S.; Suganuma,T.; Matsukura,S.; Kangawa,K.; Nakazato,M. (Endocrinology, 2000)