Female Male Mice female nonhuman mouse 103 Animals 101 male 92 controlled study 89 article 83 animal experiment 82 priority journal 81 animal tissue 55 animal model 45 animal cell 41 protein expression 40 animal 33 Mice, Inbred C57BL 29 Mice, Knockout 25 metabolism 25 Mice, Inbred BALB C 24 adult 23 unclassified drug 23 Article 22 Mus 21 human 21 Animalia 20 genetics 20 Humans 19 gene expression 19