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. Author manuscript; available in PMC: 2014 Mar 5.
Published in final edited form as: Anal Chem. 2013 Feb 12;85(5):2717–2723. doi: 10.1021/ac3031493

Figure 3.

Figure 3

a) Image overlay of three PC lipid species analyzed using ion mobility MALDI IMS: PC 36:1 (red), PC 34:1 (green), PC 36:4 (blue). Scale bars are 2 mm. On-tissue MS/MS spectra for the precursor b) protonated ion of PC 36:1 at m/z 788.62, c) potassiated ion of PC 34:1 at m/z 798.54 and d) sodiated ion PC 36:4 at m/z 804.55 were obtained prior to on-tissue hydrogel digestion.