Animals 125 animal article controlled study genetics nonhuman 118 metabolism 103 priority journal 80 animal cell 71 Mice 61 mouse 61 animal experiment 55 protein expression 54 female 50 human 48 Humans 44 messenger RNA 42 unclassified drug 41 physiology 40 gene expression regulation 39 Female 37 animal tissue 37 animal model 35 male 34 drug effect 33 RNA, Messenger 32 cytology 29 nucleotide sequence 29 signal transduction 29 gene expression 28