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Association of the polymorphism rs3834458 (T/−) in the FADS2 promoter region with fatty acid levels in plasma phospholipids of 96 RA patients. The ratios ALA/ALA+EPA (a) and ALA/Total n-3 (b) represent substrate/substrate+product(s). Total n-3 represents ALA+EPA+DPA+DHA. Data are the means±SD. *P<0.05, **P<0.01, ***P<0.001 and NS, not significant, P>0.05.
