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. 2020 Feb 4;11:1. doi: 10.3389/fpls.2020.00001

Figure 3.

Figure 3

MS/MS spectra of [M−H]− precursors of PE(36:5-O) (A) and PE(36:5-2O) (B). Acyl chains can be partially resolved in negative ion mode MS/MS spectra. PE(36:5-O) were a mixture of PE(18:2-O/18:3) and PE(18:3-O/18:2); PE(36:5-2O) were a mixture of PE(18:2-2O/18:3) and PE(18:3-2O/18:2). GPEtn: glycerophosphorylethanolamine; PEtn, phosphorylethanolamine.