Animals animal controlled study female nonhuman 354 Female 292 Article 224 metabolism 224 animal experiment 213 priority journal 201 male 179 animal cell 164 animal tissue 162 mouse 154 physiology 142 Male 141 Mice 140 article 134 genetics 120 adult 111 human 105 animal model 101 Humans 97 drug effects 89 protein expression 87 unclassified drug 80 in vitro study 70 pathology 69 drug effect 65 cytology 64