Figure 5From: Fast urinary screening of oligosaccharidoses by MALDI-TOF/TOF mass spectrometryReflectron MALDI-TOF and MALDI TOF/TOF analysis of urine from patients suffering from sialidosis or MLII or MLIII – Representative positive-ion (A) and negative-ion (B) MS spectra with negative-ion MS/MS spectrum of m/z 1200.4 (C). N-acetylglucosamine (black squares), Mannose (grey circles), Galactose (open circles), Sialic acid (grey diamond).Back to article page