Animals animal 385 animal cell metabolism nonhuman 385 controlled study 327 priority journal 263 mouse 219 Article 200 Mice 195 article 181 animal experiment 157 genetics 156 female 152 protein expression 141 human 140 Humans 133 unclassified drug 133 physiology 126 animal tissue 124 Female 118 signal transduction 102 animal model 101 drug effect 100 male 100 cytology 93 rat 88 drug effects 87 Male 82 pathology 81