FIGURE 2.

Body weight increases with increasing age despite similar food and water consumption. (A) Mean body weights measured at the beginning of the behavioral test battery for each age cohort are significantly greater with increasing ages. Mean daily individual consumption of (B) food and (C) water showed no significant effect of age. ^∗p < 0.05, ^∗∗∗p < 0.001. Error bars indicate ± SEM in this figure and subsequent figures.