Figure 2From: Fast urinary screening of oligosaccharidoses by MALDI-TOF/TOF mass spectrometryReflectron MALDI-TOF and MALDI TOF/TOF analysis of urine from aspartylglucosaminuria affected patient – representative positive-ion (A) and negative-ion (C) MS spectra with positive-ion MALDI MS/MS spectrum of m/z 358.3 (B) and negative-ion MS/MS spectrum of m/z 787.2 (D). N-acetylglucosamine (black squares), Mannose (grey circles), Galactose (open circles), Sialic acid (grey diamond), Asn (asparagine).Back to article page