Assignment of pseudomolecular ion [M+Na]+ observed in MALDI-MS spectrum of the PNGase-F-released N-glycans from both MPO forms
Symbols: blue square, N-acetylglucosamine (HexNAc); green circle, mannose (Hex); yellow circle, galactose (Hex); red triangle, fucose (dHex); and purple diamond, N-acetyl neuraminic acid (NeuAc).