animal Animals 1,260 nonhuman 904 metabolism 868 controlled study 694 article 638 priority journal 590 animal cell 558 physiology 550 mouse 496 Article 470 human 466 Mice 444 Humans 420 animal experiment 388 genetics 378 female 370 male 338 Female 314 unclassified drug 304 Male 294 animal tissue 280 drug effect 280 protein expression 260 drug effects 252 chemistry 246 cytology 246 rat 204 animal model 198 signal transduction 196