mouse nonhuman 120 controlled study 106 Mice 104 Animals 100 article 98 animal experiment 96 priority journal 80 animal model 70 female 62 male 56 Female 54 animal cell 52 Male 46 animal 42 animal tissue 40 Mice, Inbred BALB C 34 unclassified drug 30 Humans 28 human 24 metabolism 24 protein expression 24 Article 22 in vitro study 22 Mice, Knockout 20 Time Factors 20 signal transduction 20 genetics 18 physiology 18 Animalia 16