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. 2014 Sep 16;6(1):729–738. doi: 10.1039/c4sc01850h

Fig. 3. Comparison of lipid detection in rat brain by MALDI-FTICR MS, with and without MCAEF, using quercetin as the MALDI matrix. (a) Positive-ion MALDI mass spectra. (b) Negative-ion MALDI mass spectra. The matrix-related ions are labeled “♦”. (c) Venn diagram showing the classification of identified lipids with positive (red) and negative (blue) ion detection.

Fig. 3