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. Author manuscript; available in PMC: 2010 Oct 27.
Published in final edited form as: Anal Chem. 2010 Feb 1;82(3):982–988. doi: 10.1021/ac902245p

Figure 1.

Figure 1

Positive-ion LAESI mass spectrum from a selected pixel of a coronal rat brain section. The inset shows the CAD-induced tandem mass spectrum of the m/z 268.105 ion. The fragment ion at m/z 136.062 is consistent with protonated adenine, [C5H5N5 + H]+, (m/z 136.062, theoretical) within 1 ppm mass accuracy.