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. 2019 Sep 25;24(19):3482. doi: 10.3390/molecules24193482

Figure 3.

Figure 3

(A) MALDI-TOF mass spectrum of PGC-SPE extracted human milk in the m/z range from 300 to 2500 (i) and the magnified m/z range from 726 to 746 (ii). An asterisk indicates the signal corresponding to tetraose (m/z = 730.6204 [M + Na]+). (B) MALDI-TOF mass spectrum from PGC-SPE extracted human milk spiked with [13C6/15N]LNnT. An asterisk in the in the m/z range from 300 to 2500 (iii) indicates the signals corresponding to tetraose (m/z = 730.6204 [M + Na]+ and [13C6/15N] LNnT (737.641 [M + Na]+). The two isotopologues are highlighted in the amplified m/z range from 726 to 746 (iv).