6[1]Matthes HW,Smadja C,Valverde O,et al.Activity of the delta-opioid receptor is partially reduced,whereas activity of the kappa-receptor is maintained in mice lacking the mu-receptor.J Neurosci,1998,18:7285-7295.
7[2]Loh HH,Liu H,Cavalli A,et al.μ-opioid receptor knockout in mice:effects on ligand-induced analgesia and morphine lethality.Mol Brain Res,1998,54:321-326.
8[4]Zebraski SE,Kochenash SM,Raffa RB.Lung opioid receptors:pharmacology and possible target for nebulized morphine in dyspnea.Life Sci,2000,66:2221.
9[5]Moss IR,Laferriere A.Prenatal cocaine raises mu-opioid receptor density in piglet cardiorespiratory medulla.Neurotoxicol Teratol,2000,22:3.
10[6]Morin MP,Collin T,Denavit SM,et al.Agonist-dependent desensitization of the κ opioid receptor by G protein receptor kinase and β-arrestin.Eur J Neurosci,2001,13:1703.
