Animals Humans animal cell article nonhuman 298 controlled study 250 priority journal 234 human 211 Mice 173 mouse 156 human cell 154 unclassified drug 135 protein expression 119 animal experiment 99 animal model 75 Female 74 female 74 Rats 70 animal 69 Cell Line 67 cell proliferation 63 metabolism 61 animal tissue 58 signal transduction 58 rat 56 Animalia 54 Cells, Cultured 49 Cercopithecus aethiops 49 Male 49 male 48