Fig. 5From: The role of background diet on the effects of eicosapentaenoic acid and docosahexaenoic acid supplementation in healthy pre-menopausal women: a randomized, cross-over, controlled studyRelative concentrations of urinary estrogen metabolites 2-OHE1 and 16α-EOE1. Complete morning voids were collected on the same day of the menstrual cycle each month. Portions were frozen at −80 °C until analysis. Freshly thawed samples (n = 34) were thawed and estimates of metabolites determined by ELISA as described in the Methods. Values are in arbitrary units (ratio) ± SE. a = significantly different from LFD + supplement (p < 0.05) by ANOVA followed by Tukey's post-hoc testBack to article page