genetics mouse Animals 110 animal 110 metabolism 100 nonhuman 98 Mice 96 controlled study 84 gene expression 68 priority journal 68 animal cell 66 gene expression regulation 62 Article 56 animal experiment 54 human 44 female 42 Humans 40 animal model 40 animal tissue 40 article 40 protein expression 38 Female 36 messenger RNA 36 pathology 36 unclassified drug 36 cell proliferation 34 male 34 physiology 34 Male 32 down regulation 32