Fig. 2. (a) Comparison of product ion spectra at m/z 798 from tissue section (upper) and standard PC (34 : 1) [M+K]+ (lower). (b) Enlarged spectra at m/z 500–720, showing the charge remote fragmentation peaks.
![Fig. 2. (a) Comparison of product ion spectra at m/z 798 from tissue section (upper) and standard PC (34 : 1) [M+K]+ (lower). (b) Enlarged spectra at m/z 500–720, showing the charge remote fragmentation peaks.](https://www.ncbi.nlm.nih.gov/core/lw/2.0/html/tileshop_pmc/tileshop_pmc_inline.html?title=Click%20on%20image%20to%20zoom&p=PMC3&id=3775821_massspectrometry-1-2-A0013-g002.jpg)
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