Serbian CCK-4 Cited by user Dcirovic on 31 May 2011 CCK-4 (holecistokininski tetrapeptid, -{Trp}---{Met}---{Asp}---{Phe}---{NH}-2; ili -{PTK7}-) je peptidni fragment izveden iz većeg peptidnog hormona holecistokinina.
English CCK-4 Cited by user Meodipt on 07 Jul 2009 Cholecystokinin tetrapeptide (CCK-4, Trp-Met-Asp-Phe-NH2; also PTK7) is a peptide fragment derived from the larger peptide hormone cholecystokinin.