article nonhuman 118 priority journal 110 controlled study 108 unclassified drug 72 Animals 60 drug determination 56 protein determination 48 animal cell 46 male 42 human 40 Humans 38 mouse 38 animal experiment 36 female 34 Female 32 protein expression 32 protein function 32 Male 30 animal tissue 26 metabolism 26 Argentina 24 animal model 24 DNA determination 22 Mice 22 drug structure 22 hormone determination 22 human cell 22 rat 22 Protein Binding 20