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. Author manuscript; available in PMC: 2021 Sep 1.
Published in final edited form as: Anal Bioanal Chem. 2020 Feb 28;412(24):6275–6285. doi: 10.1007/s00216-020-02477-z

Figure 4.

Figure 4.

MALDI MSI heat maps for calcium related species: 25-hydroxytachysterol3 (m/z 423.3233), lysoPC (m/z 520.3398), and two PS species (m/z 702.4316 and 716.4473). Ion intensity bar and scale bar are displayed in the top panel. All four calcium-related species appeared to be more abundant in the wild type stroke mouse brains when compared to the knockout stroke mouse brains. An example of PS species detected exclusively in wild type stroke tissue (m/z 702.4316) and detected in both mouse stroke models (m/z 716.4473) are displayed. MALDI MSI analysis was conducted using a 15T FT-ICR mass spectrometer with a mass window of ±10 mDa. Mass-to-charge ratios in green indicate that samples were acquired in positive mode.