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Effect of PO administration on serum norepinephrine (NE) and serotonin (5-HT) levels. There were no inter-group differences, but significant intra-group decreases in serum levels of NE (A,B) and serotonin (C,D) were noted in both PO and placebo groups. Δ = Changes from baseline to 12 months. Placebo, n = 34. Perilla oil, n = 31, * p < 0.05.
