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. 2017 Jun 29;18:281. doi: 10.1186/s12891-017-1637-7

Fig. 2.

Fig. 2

The HPLC chromatogram from serum samples demonstrates “peak 2” and “peak 4” which represent alpha tocopheryl acetate (internal standard) in group A and group B respectively; “Peak 1” demonstrates alpha tocopherol in group A; “Peak 3” demonstrates alpha tocopherol in group B