Grandi D, Massi M, Guerrini R, Caló G, Morini G. Role of nociceptin/orphanin FQ receptors in the decrease of mucosal mast cells caused by acute stress in the rat colon. Life Sci. 2011 Nov 07;89(19-20):735–40. doi: 10.1016/j.lfs.2011.08.015. PMID: 21925513.