title: Operant behaviour of rats after aminophylline and DH-ergotoxin in interaction with catecholamines.
mesh_terms: D000628:Aminophylline / Q000008:administration & dosage*; D000818:Animals; D002395:Catecholamines / Q000008:administration & dosage*; D003216:Conditioning, Operant / Q000187:drug effects*; D004088:Dihydroergotoxine / Q000008:administration & dosage*; D004347:Drug Interactions; D005260:Female; D051381:Rats
chemical_list: D002395:Catecholamines; D004088:Dihydroergotoxine; D000628:Aminophylline