Chronic treatment with a serotonin(2) receptor (5-HT(2)R) agonist modulates the behavioral and cellular response to (+)-3,4-methylenedioxymethamphetamine [(+)-MDMA]. - Ross JD; Herin DV; Frankel PS; Thomas ML; Cunningham KA; Ross, Julie D; Herin, David V; Frankel, Paul S; Thomas, Mary L; Cunningham, Kathryn A (Drug & Alcohol Dependence, 2006)