Animals controlled study human nonhuman Humans 428 article 318 priority journal 296 animal cell 294 human cell 271 mouse 253 Mice 246 animal 244 unclassified drug 215 animal experiment 202 metabolism 176 protein expression 169 female 151 Article 146 animal model 146 Female 144 male 112 animal tissue 110 Male 106 genetics 105 in vitro study 95 in vivo study 90 Cell Line, Tumor 83 cell proliferation 82 Cell Line 80 physiology 73