Animals Molecular Structure 104 article 84 unclassified drug 70 nonhuman 64 chemical structure 48 controlled study 44 chemistry 40 human 40 Humans 38 animal 38 drug structure 30 Structure-Activity Relationship 26 human cell 22 structure activity relation 22 animal cell 20 Cell Line 18 Cercopithecus aethiops 18 drug isolation 18 proton nuclear magnetic resonance 18 Dose-Response Relationship, Drug 16 Mice 16 Nuclear Magnetic Resonance, Biomolecular 16 Steroids 16 drug synthesis 16 priority journal 16 Antiviral Agents 14 Magnetic Resonance Spectroscopy 14 Vero Cells 14 carbon nuclear magnetic resonance 14