Animals 235 animal animal cell controlled study mouse nonhuman 235 Mice 209 metabolism 184 priority journal 168 Article 136 animal experiment 135 protein expression 106 animal model 103 article 99 female 98 Humans 95 genetics 95 human 95 animal tissue 94 unclassified drug 88 Female 82 physiology 80 signal transduction 69 male 68 drug effects 67 cytology 65 pathology 65 in vitro study 55 Male 52 protein function 51