Humans article controlled study human priority journal human cell 359 Female 278 female 253 Male 241 nonhuman 223 male 216 Animals 206 adult 197 Adult 182 protein expression 164 unclassified drug 153 Middle Aged 142 animal cell 142 Mice 121 clinical article 110 mouse 106 Aged 98 metabolism 91 cell proliferation 89 aged 88 Cell Line, Tumor 83 major clinical study 82 animal experiment 80 signal transduction 78 protein function 76