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Self Administration
Rats
Wistar Rats
Cocaine
Narcotics
Heroin
Saccharin
Dopamine
Cocaine-Related Disorders
Substance-Related Disorders
Animal Disease Models
Conditioning, Operant
Drug Tolerance
Reward
Drug Dose Response Relationship
Time Factors
Motivation
Behavior, Addictive
Animal Behavior
Nucleus Accumbens
Co-Publications
16
5
4
3
2
1
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