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Percentage of rats in each group that met standard acquisition criteria for nicotine self-administration. All rats were retained in the study, regardless of whether they met acquisition criteria.
| Sex | |||
|---|---|---|---|
| 0 mg/kg | 3 mg/kg | 30 mg/kg | |
| Male | 100% | 87.5% | 87.5% |
| Female | 100% | 85.7% | 100% |
