controlled study mouse priority journal unclassified drug nonhuman 241 Animals 200 article 179 Mice 178 animal cell 177 animal experiment 139 animal model 99 animal tissue 86 human 83 protein expression 83 Humans 82 animal 80 male 66 female 65 metabolism 64 Female 63 Article 62 protein function 57 Male 56 human cell 53 signal transduction 52 messenger RNA 48 Mice, Inbred BALB C 45 cell proliferation 39 genetics 39 gene expression 36