. Author manuscript; available in PMC: 2009 Dec 1.

Published in final edited form as: Int J Mass Spectrom. 2008 Dec 1;278(2-3):143–149. doi: 10.1016/j.ijms.2008.04.005

Table 2.

Lipid species identified under positive ion mode MALDI IMS.

Species	Presentation	Theoretical m/z	Actual m/z
SM 18:0	[M+K]⁺	769.56	769.71
PC 32:0	[M+Na]⁺	756.55	756.64
PC 32:0	[M+K]⁺	772.53	772.62
PC 34:1	[M+H]⁺	760.59	760.71
PC 34:1	[M+K]⁺	798.54	798.66
PC 36:1	[M+K]⁺	826.57	826.72
PC 36:4	[M+H]⁺	782.57	782.66
PC 36:4	[M+K]⁺	820.53	820.65
PC 38:6	[M+K]⁺	844.53	844.63