Humans Male human 860 male 784 Female 674 article 654 female 616 adult 522 controlled study 510 priority journal 476 Adult 464 Middle Aged 336 Animals 244 nonhuman 208 Aged 198 Argentina 188 aged 186 major clinical study 172 Adolescent 170 human cell 170 clinical article 156 Article 152 middle aged 152 physiology 144 Young Adult 142 adolescent 138 Child 122 child 116 animal experiment 108 protein expression 106