Figure 1.

Consumption of alternative fluids in KO and WT mice. A) Average volume of 20% ethanol (ml) consumed during the 4 hr test on the 4^th day of access in females and males. Average grams of ethanol consumed per kilogram body mass ± SE are reported within bars, along with sample sizes. B) Average volume of 10% sugar water consumed. C) Average volume of plain tap water consumed. Standard error bars are shown. More females were used than males because the variance in drinking behavior was greater in females than males possibly due to the estrus cycle in females. WT are represented as black bars, KO as gray bars.