TABLE 1.

Most-abundant PC and SM species with their observed m/z values, maximum peak intensities per pixel, and ion drift times (bins) detected by MSI

	Measured m/z values			Max peak-intensity/pixel			Drift time (bins)
Phospholipid	[M+H]+	[M+Na]+	[M+K]+	[M+H]+	[M+Na]+	[M+K]+	[M+H]+	[M+Na]+	[M+K]+
SM(d18:1/16:0)	703.58	725.54	741.50	81	112	136	89.81	90.74	91.59
PC(16:0/16:0)	734.56	756.54	772.51	131	108	153	90.84	91.70	92.28
PC(16:0/18:1)	760.58	782.56	798.52	140	139	173	92.22	92.55	93.91
PC(18:1/18:1)	786.59	808.58	824.54	121	118	160	94.09	94.68	95.19
PC(18:0/18:1)	788.62	810.59	826.57	95	135	122	95.59	95.99	96.73

Values are listed for protonated ions [M+H]⁺, sodium adducts [M+Na]⁺, and potassium adducts [M+K]⁺ of lipids.