Figure 4From: Fast urinary screening of oligosaccharidoses by MALDI-TOF/TOF mass spectrometryReflectron MALDI-TOF and MALDI TOF/TOF analysis of urine from α-mannosidosis affected patient – Representative positive-ion (A) and negative-ion (C) MS spectra with positive-ion MS/MS spectrum of m/z 568.2 (B). Mannose (grey circles), N-acetylglucosamine (black squares).Back to article page