animal cell human nonhuman controlled study 384 Animals 362 Humans 346 human cell 330 article 326 priority journal 320 mouse 258 Mice 222 unclassified drug 198 animal 178 protein expression 178 metabolism 156 animal experiment 144 female 128 animal model 116 Article 112 male 102 signal transduction 100 Female 96 Cell Line 88 cell proliferation 86 genetics 84 rat 84 animal tissue 80 in vitro study 80 protein function 76 Male 72