Fig. 1From: Dysfunction in endocannabinoids, palmitoylethanolamide, and degradation of tryptophan into kynurenine in individuals with depressive symptomsPrincipal component analysis: the graph is the biplot representing both the score plot and the loading plot. Blue points represent the control group, and red points represent the depression group. Arrows represent the correlation between the parameters and the principal componentBack to article page