Kinetics nonhuman article 276 priority journal 276 Animals 178 controlled study 153 animal cell 115 Support, Non-U.S. Gov't 110 Animal 98 kinetics 88 Rats 87 enzyme activity 86 rat 80 unclassified drug 78 animal experiment 63 Mice 60 metabolism 59 animal tissue 58 mouse 55 Male 49 Hydrogen-Ion Concentration 48 Protein Binding 47 Humans 46 Substrate Specificity 46 Animalia 43 Binding Sites 43 animal 43 Female 40 protein expression 38 Molecular Sequence Data 37