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(A) MS/MS spectra of taurodeoxycholic acid standard at m/z 498.29 [M−H]−producing fragment ions at m/z 79.957, 106.982, and 124.010. (B-D) Extracted ion images of fragment ions as follows: (B) m/z 79, (C) m/z 106, and (D) m/z 124 from the MS/MS imaging analysis for taurodeoxycholate
