Animals 699 Humans animal human 699 nonhuman 409 metabolism 359 controlled study 260 article 249 physiology 235 priority journal 226 mouse 202 Article 200 genetics 199 chemistry 191 Mice 180 unclassified drug 173 animal cell 161 female 161 Female 141 human cell 131 animal experiment 123 protein expression 121 male 115 drug effects 112 pathology 106 drug effect 105 Male 103 Review 94 signal transduction 90 Argentina 86