Article Humans human controlled study 349 metabolism 258 priority journal 244 nonhuman 229 Animals 204 animal 200 female 199 human cell 180 Female 179 genetics 166 male 159 Male 151 unclassified drug 146 adult 133 drug effects 116 protein expression 112 chemistry 110 physiology 102 animal cell 94 mouse 90 pathology 86 in vitro study 82 Adult 81 animal experiment 78 Mice 72 signal transduction 72 Argentina 66