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. 2022 Mar 30;9:858603. doi: 10.3389/fnut.2022.858603

FIGURE 3.

FIGURE 3

MS imaging-based visual mapping profiles of BAs distributed within regions of ileum. MS ion images representing spatial distributions of NPA (m/z 290.0823 ± 0.05) and the identified BAs at TCDCA/TUDCA/TDCA m/z 498.2895 ± 0.05 (A), TCA/TMCA m/z 514.2844 ± 0.05 (B) and GCA m/z 464.3018 ± 0.05 (C) for the whole section of mouse ileum (Scale bars: 700 μm). Overlay: Overlay of each MS ion image and optical image. All ion images were normalized to the 9AA matrix signal. Abbreviation: CD, control diet group; HFD, high-fat diet group.