Animals 80 Mice animal 80 human 80 human cell 80 metabolism mouse 80 Humans 66 controlled study 66 nonhuman 62 animal cell 50 unclassified drug 44 article 42 animal experiment 40 animal model 40 priority journal 40 protein expression 36 genetics 34 Article 32 in vivo study 28 signal transduction 28 female 26 pathology 26 chemistry 24 Female 22 gene expression regulation 22 protein function 22 Cell Line, Tumor 20 NIH 3T3 Cells 20 cell proliferation 20