Fig. 2
From: Biosynthesis of uniformly carbon isotope-labeled docosahexaenoic acid in Crypthecodinium cohnii
The mass spectrums of purified U-13C-DHA from C. cohnii in the EMS mode. a Total ion current of the lipid extracts collected from HPLC fractions between 24–27 min for m/z = 324–352; b unlabeled and labeled 13C-DHA