FIGURE 3.

Mild stress exposure resulted in increased fat and lean mass in both genotypes, but increases in individual food intake are found only in the KO rats. (A) At the end of the mild stress protocol, EchoMRI analysis assessed total fat mass, and found that mild stress exposure had significantly increased total fat mass in both WT (black) and KO (gray) rats. ***p < 0.001 represents main effect of stress. (B) Similarly, mild stress exposure significantly increased total lean mass in both WT and KO rats. **p < 0.01 represents main effect of stress. (C) During the week of individual housing, stress-exposed KO rats consumed a greater quantity of food during the week, with no differences in WT eating behavior related to stress exposure. **p < 0.01 represents effect of stress in KO rats.