human priority journal Humans 1,439 article 1,279 controlled study 1,088 human cell 798 nonhuman 790 female 626 Animals 610 Female 578 male 557 Male 494 adult 477 unclassified drug 456 protein expression 412 metabolism 349 Adult 336 Article 330 animal cell 306 signal transduction 286 mouse 249 Mice 248 Middle Aged 248 clinical article 242 animal 238 protein function 224 major clinical study 210 aged 208 cell proliferation 202 genetics 183