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Schematic illustrations of MSI with (a) MALDI, (b) SIMS, and (c) DESI and ion maps of (a) myelin basic protein (isoform 4) on sectioned rat brain by MALDI imaging [9], (b) phosphocholine head group on three PC12 cells by SIMS imaging [10], and (c) phosphatidylserine (PC 40:6) on sectioned rat brain by DESI imaging [8].
