Figure 4: Molecular identification using MALDI LIFT (MS/MS) analyses. (A) Peaks at m/z 741.6, 772.7, and 798.6 in the positive ion mode (B) Peaks at m/z 599.5 and 835.6 in the negative ion mode (C) Peaks at m/z 861.7 and 885.7 in the negative ion mode (D) Peaks at m/z 518.4 and 524.4 in the positive ion mode.