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. 2015 Sep 18;20(9):17221–17243. doi: 10.3390/molecules200917221

Figure 1.

Figure 1

Gas chromatogram with mass-spectrometric detection of the total lipid extract of Polytrichum commune (PC). IS, internal standard (* methylheptadecanoic acid, ** progesterone); numbers refer to the compounds listed in Table 1. Acid and alcohol groups were derivatized prior to the GC/MS analysis.