. Author manuscript; available in PMC: 2016 Jun 17.

Published in final edited form as: J Proteome Res. 2015 Apr 29;14(6):2511–2519. doi: 10.1021/acs.jproteome.5b00076

Table 1. Summary of results of negative and positive ion MS/MS by CID obtained directly from tumor sections oost-MALDI-IMS.

Observed (m/z)	Product Ions (m/z)	Assignment
735.4 [M+CI]-	79.0, 97.0, 153.1, 283.3, 416.4, 419.2, 437.2	PA (18:0/18:2)
327.0 [M-H]-	149.4, 178.5, 242.0, 283.2	DHA (22:6)