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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: J Am Soc Mass Spectrom. 2020 Feb 11;31(3):642–650. doi: 10.1021/jasms.9b00081

Figure 4.

Figure 4.

Mass spectrum for a lipid extract of rat liver for the IR-MALDESI-IMS-MS platform with putative identifications. The series of protonated and sodiated phosphatidylcholine (PC) cations observed is ubiquitous in mass spectrometry imaging of animal tissue. This series was also observed with an IR-MALDESI-Orbitrap platform.