Animals human 388 human cell Humans 337 controlled study 327 nonhuman 312 article 293 priority journal 246 animal cell 236 Mice 214 mouse 194 unclassified drug 185 animal 145 protein expression 144 metabolism 123 animal experiment 120 Cell Line 95 animal model 94 female 82 Cell Line, Tumor 81 cell proliferation 81 Female 79 in vitro study 79 Article 76 signal transduction 74 in vivo study 72 male 67 Male 65 Cercopithecus aethiops 64 protein function 64