animal controlled study Animals 968 nonhuman 924 metabolism 649 Article 580 priority journal 533 animal experiment 482 animal cell 434 physiology 399 article 396 mouse 392 female 364 male 353 animal tissue 348 Mice 342 Male 301 genetics 299 Female 294 unclassified drug 288 human 279 Humans 260 drug effects 249 protein expression 224 animal model 205 drug effect 199 chemistry 182 adult 161 in vitro study 152 rat 145