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Extracted ion chromatogram (ESI-) of the ion traces m/z 327.2, 343.3, 301.2, 317.2, 319.2 and 335.3 referring to FA 22:6, FA 20:5, their respective hydroxylated species and 5S,12S-diHETE in the RA pool sample. The upper left corner shows the obtained MS/MS spectrum for the precursor m/z 335 at 1.6 min. The upper right corner shows 5S,12S-diHETE and its preferred fragmentation yielding m/z 195.
