Article adult priority journal controlled study 149 female 133 male 131 nonhuman 110 Female 95 Male 95 Animals 84 animal 84 human 79 animal experiment 76 metabolism 74 animal tissue 60 Humans 59 physiology 58 genetics 44 Adult 41 animal cell 40 middle aged 38 protein expression 38 drug effects 34 mouse 34 Middle Aged 30 animal model 30 unclassified drug 30 gene expression 24 brain 22 clinical article 22