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Ion mobilograms of the precursor and product ions obtained from negative ion CTS of (A) PC(17:0/20:4), (B) PE(17:0/20:4), (C) PA(17:0/20:4), (D) PS(17:0/20:4), (E) PI(17:0/20:4), and (F) SM(d18:1/18:0). The insets are structures of various product ions observed in the CTS experiment. The peaks are labeled with their nominal mass values.
