Table 1.

Comparison of levels of alcohol consumption and of alcohol preference in transgenic mice used

Mouse lines	Alcohol intake (g/kg/24 h)	Alcohol preference (%)
D1-eGFP	4.90 ± 0.50	27.88 ± 3.49	n = 11
D1-Cre/DsRed	16.08 ± 1.23***	53.69 ± 3.48###	n = 17
D2-Cre/DsRed	15.88 ± 0.75a	57.52 ± 1.97b	n = 19

All mice were exposed to alcohol using the intermittent access to 20% alcohol two-bottle choice drinking procedure.

***p < 0.001, D1-Cre/DsRed versus D1-eGFP mice for alcohol intake;

^###p < 0.001, D1-Cre/DsRed versus D1-eGFP mice for alcohol preference.

^aNo significant difference (p > 0.05) in alcohol intake between D1-Cre/DsRed and D2Cre/DsRed mice.

^bNo significant difference (p > 0.05) in alcohol preference between D1-Dre/DsRed and D2-Cre/DsRed mice.