Figure 9. Trisomic mice continued to drink significantly more CS on second exposure than disomic mice.

There was no significant difference in degree of preference during first exposure between disomic and trisomic animals. During the second exposure disomic mice had a greater avoidance of the CS than the trisomic animals (* p<0.05). Treatment did not preferentially affect CTA learning and affected both karyotypes to the same degree. Mean ± SEM shown.