Animals controlled study human Humans 506 nonhuman 496 article 410 priority journal 350 human cell 346 animal cell 310 animal 290 Mice 288 mouse 280 unclassified drug 248 metabolism 210 animal experiment 208 protein expression 204 female 170 Female 168 Article 154 animal model 150 male 130 Male 128 genetics 122 animal tissue 114 in vitro study 110 Cell Line 102 Cell Line, Tumor 98 cell proliferation 98 in vivo study 98 signal transduction 94