adult male nonhuman Animals 173 controlled study 173 Male 157 female 154 animal 148 Article 144 priority journal 119 Female 117 animal experiment 115 human 87 physiology 86 animal tissue 81 animal cell 70 Humans 69 article 69 metabolism 62 genetics 50 mouse 48 drug effects 40 protein expression 40 Mice 38 animal model 36 Argentina 34 Adult 30 Chagas disease 30 unclassified drug 30 gene expression 27