Cannabinoids inhibit neurodegeneration in models of multiple sclerosis. - Pryce,G.; Ahmed,Z.; Hankey,D.J.; Jackson,S.J.; Croxford,J.L.; Pocock,J.M.; Ledent,C.; Petzold,A.; Thompson,A.J.; Giovannoni,G.; Cuzner,M.L.; Baker,D. (Brain, 2003)