Humans animal cell controlled study nonhuman Animals 338 human 288 article 261 priority journal 261 human cell 202 Mice 200 mouse 197 unclassified drug 168 protein expression 153 animal 148 animal experiment 134 metabolism 126 animal model 107 female 107 Article 92 Female 88 Cell Line 80 cell proliferation 80 signal transduction 80 animal tissue 76 male 75 Male 72 genetics 68 in vitro study 68 Cell Line, Tumor 67 Rats 60