Fig. 5.
GDNF HET mice consume more ethanol than WT mice after a period of abstinence. (A and B) Voluntary ethanol (A) or saccharin (B) intake (g / kg) during 4-hour limited-access to a 20% ethanol or a 0.06% saccharin solution, before and after a 1-week period of abstinence. The pre-abstinence values are the average of the 4 consecutive sessions of drinking preceding the abstinence period. n = 10 per group. Data are presented as mean ± SEM. *p < 0.05, **p < 0.01 compared with pre-abstinence values.