In-vivo MRS Applications NMR in biofluids ( 00CONC289 , 00ENC98 ) Proton NMR chemical shifts and coupling constants for brain metabolites ( 00NMRB129 ) In vivo detection and quantification of scalar coupled 1H NMR resonances ( 01CONC32 ) Classification of brain tumors ( 04JMR164-170 ) Cells and tissues studied by NMR ( 01PROG41 and 00ENC180 ) Perfused organs studied using NMR ( 00ENC1763 ) Applications: 31P ( 00ENC851 ), others nuclei ( 00ENC857 ) NMR using 13C labelled metabolites ( 00ENC1097 )