F639A Het and wild-type mice do not differ in taste reactivity.

<p>Consumption in wild-type and F639A Het mice was measured using a two-bottle choice test with 24 h continuous access to tastants (n = 7 for each group). Left panels show preference ratio for volume of tastant solution consumed over water measured on the 4^th day of access for (<i>A</i>) saccharin, (<i>B</i>) sucrose, and (<i>C</i>) quinine. Right panels show corresponding volumes consumed across days for each tastant. Values are mean ±SEM.