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Cocaine
Dopamine Uptake Inhibitors
Morphine
Rats
Sprague Dawley Rats
Saimiri
Rabbits
Self Administration
Reinforcement Schedule
Conditioning, Operant
Drug Interactions
Classical Conditioning
Drug Dose Response Relationship
Time Factors
Motivation
Heart Rate
Blood Pressure
Cocaine-Related Disorders
Animal Behavior
Motor Activity
Co-Publications
55
31
19
18
8
7
6
5
4
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