Humans article controlled study human 928 priority journal 772 human cell 525 nonhuman 478 Animals 467 Female 443 female 409 Male 371 male 337 unclassified drug 313 adult 293 protein expression 273 animal cell 261 Adult 246 Mice 233 mouse 208 Middle Aged 182 animal experiment 171 metabolism 164 cell proliferation 154 Cell Line, Tumor 147 signal transduction 147 clinical article 143 Cell Line 138 animal model 122 Aged 117 protein function 116