Title: Hua XY, et al. Galanin acts at GalR1 receptors in spinal antinociception: synergy with morphine and AP-5. J Pharmacol Exp Ther. 2004 Feb;308(2):574-82.
Title: Schmidt WE, et al. Isolation and primary structure of pituitary human galanin, a 30-residue nonamidated neuropeptide. Proc Natl Acad Sci U S A. 1991 Dec 15;88(24):11435-9.