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Infarct zone of the matrix-assisted laser desorption/ionization–mass spectrometry imaging (MALDI–MSI) results (marked with red coils). (A) Masson staining of the adjacent heart slice. (B) The MALDI-MSI results of ascorbic acid and PE (16:0/22:6). The spatial resolution is 200 μm (scale bar, 5 mm). S, sham; MOD, model; H, 12 ml/kg Shenfu injection.
