Article female human Humans 199 controlled study 191 Female 181 male 165 adult 161 Male 129 priority journal 119 nonhuman 92 metabolism 90 Adult 79 Animals 76 animal 74 human cell 64 genetics 62 major clinical study 62 middle aged 62 protein expression 62 Middle Aged 54 Argentina 48 physiology 48 animal cell 40 animal experiment 40 human tissue 40 in vitro study 40 pathology 40 young adult 40 Young Adult 39