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Mean (+SEM) distance traveled scores of saline- and cocaine-treated preweanling and adult rats on the pretreatment day.
| Drug Group | Age
|
|
|---|---|---|
| PD 19 | PD 79 | |
| Saline | 3,512 (+469) | 10,223 (+357) * |
| 15 mg/kg Cocaine | 13,609 (+2018) | Not tested |
| 30 mg/kg Cocaine | 14,849 (+1023) | 37,184 (+1,946) * |
| Cocaine (relative to saline) | 4.2-fold increase | 3.6-fold increase |
Significantly different from PD 19 rats.
