Figure 4From: Relationships among body mass, brain size, gut length, and blood tryptophan and serotonin in young wild-type miceRelationships between the litter means of highly correlated variables. (A) The relationship between the litter means of body mass and blood 5-HT concentration. (B) The relationship between the litter means of gut length and the brain/body mass ratio. In (A) and (B), point #N (M) represents litter N with M cases analyzed; the horizontal and vertical bars represent the standard errors of the means.Back to article page