Fig. 1From: Untargeted metabolomic on urine samples after α-lipoic acid and/or eicosapentaenoic acid supplementation in healthy overweight/obese womenPrincipal component analysis (PCA) of untargeted metabolomics analysis of urine samples, including LIPOIC FINAL, LIPOIC INITIAL, NO LIPOIC FINAL and NO LIPOIC INITIAL groups. a PCA in positive ionization mode (ESI+). b PCA in negative ionization mode (ESI-)Back to article page