Animals 78 animal 78 animal experiment genetics nonhuman 78 controlled study 74 metabolism 70 mouse 54 priority journal 52 Mice 50 gene expression 46 animal model 44 animal tissue 44 Article 42 gene expression regulation 42 animal cell 40 male 40 messenger RNA 40 Male 38 unclassified drug 38 article 36 protein expression 36 RNA, Messenger 32 female 32 human 30 physiology 30 Female 28 Humans 28 pathology 24 drug effect 20