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. 2020 Oct 9;10(10):400. doi: 10.3390/metabo10100400

Figure 2.

Figure 2

Extracted mass chromatograms for C16:0 free acid (2 µg on column) in negative ion mode at m/z 255.3 > 237.5 (A), and DAABD-C16:0 amide derivative (5 fg on column) in positive ion mode at m/z 567.3 > 151.1 (B).