“Experiment 2 revealed that tranylcrypromine (2.5 mg/kg; s=1.7), fentanyl (0.068 …=1.34), morphine (>10 mg/kg), phencyclidine (0.81 mg/kg; s=1.43), and benztropine (9.2 mg/… stimulus generalization with cocaine , whereas lidocaine, procaine, chlordiazepoxide, imipramine, desipramine, …, isopropamide, and atropine do not.”