Animals 79 Mice animal mouse 79 priority journal unclassified drug nonhuman 74 controlled study 66 metabolism 61 animal cell 53 animal experiment 50 genetics 41 article 39 Article 38 animal tissue 37 animal model 35 human 35 Humans 33 physiology 27 protein expression 27 cytology 26 messenger RNA 25 Female 23 female 23 drug effects 22 chemistry 21 protein function 21 signal transduction 21 gene expression 19 gene expression regulation 18