Repositorios 41 Catálogos de Bibliotecas 29

article 390 mass spectrometry 298 nonhuman 269 unclassified drug 223 priority journal 199 Mass spectrometry 187 controlled study 182 chemistry 153 Animals 130 metabolism 108 Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization 101 electrospray mass spectrometry 100 matrix assisted laser desorption ionization time of flight mass spectrometry 100 proton nuclear magnetic resonance 92 human 90 Humans 88 Article 87 Spectrometry, Mass, Electrospray Ionization 76 Mass Spectrometry 70 chemical structure 69 Magnetic Resonance Spectroscopy 68 high performance liquid chromatography 67 carbon nuclear magnetic resonance 62 drug structure 60 nuclear magnetic resonance spectroscopy 58 Argentina 56 animal 56 Chromatography, High Pressure Liquid 55 Molecular Structure 54 drug isolation 52