Animals metabolism nonhuman animal 795 controlled study 625 priority journal 470 Article 422 animal cell 385 animal experiment 359 mouse 352 article 314 animal tissue 303 physiology 302 Mice 300 genetics 284 unclassified drug 266 human 264 female 261 Humans 247 male 235 protein expression 217 Female 213 Male 201 drug effects 181 animal model 165 drug effect 163 signal transduction 158 chemistry 157 rat 147 pathology 130