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. Author manuscript; available in PMC: 2020 Aug 18.
Published in final edited form as: Anal Chem. 2018 Sep 18;90(19):11324–11332. doi: 10.1021/acs.analchem.8b01961

Figure 1.

Figure 1.

Negative-ion-mode DESI-MSI of IDC and normal breast tissues. (A) Representative profile for the IDC-tissue region. (B) Representative profile for the normal-breast-tissue region. (C) Representative ion images for the IDC-tissue sample and optical images of the H&E stained tissue section. (D) Representative ion images for the normal-tissue sample and optical images of the H&E stained tissue section. Tumor areas are outlined in red on H&E slides. Areas of red intensity within the ion images represent the highest (100%) relative abundances, whereas black represents the lowest (0%). PI: glycerophosphoinositol, PS: glycerophosphoserine, FA: fatty acid. Lipid species are described by the numbers of fatty acid chain carbons and double bonds.