Species differences in cannabinoid receptor 2 (CNR2 gene): Identification of novel human and rodent CB2 isoforms, differential tissue expression and regulation by cannabinoid receptor ligands - Q.-R. Liu; C.-H. Pan; A. Hishimoto; C.-Y. Li; Z.-X. Xi; A. Llorente-Berzal; M.-P. Viveros; H. Ishiguro; T. Arinami; E.S. Onaivi; G.R. Uhl (2009)