article 520 nonhuman 308 Animals 257 controlled study 238 priority journal 232 Argentina 212 Humans 126 unclassified drug 122 metabolism 118 animal 113 human 113 animal cell 107 South America 96 Mice 91 male 90 mouse 87 physiology 85 genetics 84 Male 80 protein expression 77 Female 72 female 71 animal experiment 70 human cell 64 signal transduction 59 animal tissue 55 Animalia 52 chemistry 52 Molecular Sequence Data 50 protein function 45