metabolism nonhuman priority journal animal 494 controlled study 472 Animals 470 Article 320 animal cell 291 article 286 genetics 261 animal experiment 239 mouse 239 unclassified drug 224 physiology 223 animal tissue 205 Mice 199 human 187 female 180 Humans 175 male 166 protein expression 156 chemistry 151 Female 144 Male 142 drug effect 141 signal transduction 141 drug effects 113 animal model 112 enzyme activity 106 rat 104