Humans animal cell nonhuman Animals 424 controlled study 380 human 346 article 342 priority journal 330 Mice 244 human cell 242 mouse 240 unclassified drug 202 protein expression 184 animal 168 animal experiment 148 metabolism 146 female 122 animal model 112 Female 108 cell proliferation 100 Cell Line 98 signal transduction 96 Article 94 Rats 92 male 84 Male 82 animal tissue 82 rat 82 Cell Line, Tumor 78 genetics 78