2 alkyne muramic acid 1 Article 1 Chromatography, Liquid 1 Hayashi test 1 Helicobacter pylori 1 LC-MS/MS identification 1 Muramic Acids N-acetylmuramic acid 1 Peptidoglycan 1 Tandem Mass Spectrometry 1 bacterial growth 1 bioassay 1 cell wall 1 chemical analysis 1 chemical modification 1 clinical protocol 1 fosfomycin rescue assay 1 high performance liquid chromatography 1 illumination 1 liquid chromatography 1 liquid chromatography-mass spectrometry 1 mass spectrometry 1 metabolic labeling 1 microscopy 1 muramic acid 1 nonhuman 1 peptidoglycan 1 protein synthesis 1 structured illumination microscopy 1 sugar 1