Humans animal tissue nonhuman 160 Animals 158 controlled study 148 article 122 priority journal 122 animal experiment 118 mouse 106 human 104 Mice 100 animal model 94 animal cell 82 female 76 Female 74 protein expression 70 animal 58 human cell 52 male 52 metabolism 46 Male 44 Cell Line, Tumor 42 unclassified drug 42 cell proliferation 40 rat 40 Rats 38 in vivo study 38 Article 34 Cells, Cultured 32 signal transduction 32