Table 1.

Nicotine administration (0.2mg/kg, s.c.) increases 20% ethanol operant self-administration (60 minute, FR3 schedule).

	Treatment
Session	Nicotine 0.2mg/kg	Vehicle
Baseline (No injections)	0.99 ± 0.18	0.92 ± 0.13
1	1.48 ± 0.33	1.03 ± 0.26
2	1.48 ± 0.14	1.02 ± 0.25
3	1.53 ± 0.24*	0.89 ± 0.22
4	1.37 ± 0.26	1.09 ± 0.11
5	1.51 ± 0.30*	0.92 ± 0.21
6	1.43 ± 0.18*	0.86 ± 0.12

^*p<0.05, compared to the vehicle pretreated group