Animals animal cell article nonhuman 542 controlled study 444 priority journal 422 Mice 255 mouse 233 animal experiment 203 unclassified drug 177 protein expression 162 Female 161 female 155 animal tissue 151 Rats 147 Humans 136 rat 132 animal model 129 Male 122 male 117 human 111 Animalia 104 animal 98 human cell 81 signal transduction 80 cell proliferation 78 metabolism 78 Cells, Cultured 74 Rats, Sprague-Dawley 74 Cercopithecus aethiops 70