Animals animal 160 genetics metabolism 136 nonhuman 134 controlled study 108 article 78 mouse 78 animal cell 76 gene expression regulation 76 priority journal 74 human 72 Mice 68 messenger RNA 64 unclassified drug 64 Humans 62 Article 56 animal experiment 56 protein expression 56 gene expression 54 genetic transcription 52 animal tissue 48 physiology 40 promoter region 40 signal transduction 40 transcription factor 40 RNA, Messenger 38 animal model 38 female 38 Cell Line 36