title: Proceedings: Study of drug dependence. 11. Cross preference formation between morphine and cocaine in rats.
mesh_terms: D000818:Animals; D001835:Body Weight; D003042:Cocaine; D006801:Humans; D009021:Morphine Dependence; D051381:Rats; D013375:Substance Withdrawal Syndrome; D019966:Substance-Related Disorders
chemical_list: D003042:Cocaine