Article female controlled study 398 Female 350 nonhuman 350 male 308 Animals 292 animal 288 priority journal 264 adult 254 human 246 Male 220 metabolism 204 Humans 200 animal experiment 188 animal tissue 148 physiology 138 animal cell 126 genetics 118 mouse 116 protein expression 100 drug effects 98 unclassified drug 88 Mice 84 Argentina 82 Adult 80 animal model 80 in vitro study 72 human cell 64 major clinical study 62