after the determination of the disruptive effects of single injections of cocaine or d-amphetamine on milk intake , rats were injected daily with either 16 mg/kg of cocaine 15 minutes before the session , 16 mg/kg of cocaine immediately after the session , 2.0 mg/kg of d-amphetamine 15 minutes before the session or saline before the session .
C0011812
d-amphetamine
C0002658
amphetamine