An aliquot of the blood samples (250 μL) used for the HDFM measurements was then used for the separation of the blood cells, isolation of mature RBC membrane phospholipids and examination of fatty acid composition, applying previously published protocols7 (link). We evaluated the fatty acids of the mature erythrocyte membrane phospholipids as relative percentages (% rel) referred to a cluster of 12 fatty acids (10 cis and 2 trans fatty acids)2 . The mean % rel ± standard deviation (sd) of the RBC membrane fatty acid cluster for healthy and ASD children with the decreased value of DHA in the ASD children (P = 0.0424) are reported in the Supplementary Table 4.
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