Amino acids 1 Bacterial cells 1 Carbon 1 Carbon source 1 Carbon sources 1 Cell-be 1 Cell/B.E 1 Cells 1 Cytology 1 Deuterium 1 Deuterium labelling 1 Deuterium-labelling E.coli O157:H7 1 Escherichia coli 1 Heavy water 1 Macromolecular composition 1 Metabolic activity 1 Metabolism 1 Nucleic acids 1 Proteins 1 Raman spectroscopy 1 Single cell bacteria 1 Single-cell bacterium 1 Stable-isotope probing 1