Animals Humans controlled study human nonhuman 428 article 327 priority journal 288 human cell 287 animal cell 272 animal 260 Mice 241 mouse 238 unclassified drug 213 metabolism 192 animal experiment 186 protein expression 172 Article 148 female 141 Female 138 animal model 134 Male 116 male 114 genetics 108 animal tissue 98 Cell Line 88 in vitro study 87 Cell Line, Tumor 85 cell proliferation 84 chemistry 82 in vivo study 82