Animals animal cell nonhuman 445 protein expression controlled study 396 article 364 priority journal 343 Mice 282 mouse 266 animal experiment 206 unclassified drug 167 Humans 160 animal 160 Female 156 animal tissue 154 female 153 human 143 metabolism 141 animal model 140 male 115 Male 112 signal transduction 106 human cell 105 messenger RNA 103 protein function 100 rat 97 Rats 94 cell proliferation 87 Mice, Inbred BALB C 80 Article 78