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Carotenoid concentrations normalized to baseline (a) and the rate constant k determining the antioxidant status (b) that was measured in vivo in the SC of the inner side of the human forearm, of the verum group with the dietary supplementation Lutex skinTM (n = 10, orange) and the placebo group (n = 12, grey) using RRS and EPR spectroscopy, respectively. The figure is adapted from [191].
