Animals animal 220 controlled study female metabolism nonhuman Female 182 animal experiment 149 priority journal 139 Article 134 animal cell 128 animal tissue 124 mouse 116 Mice 106 male 89 animal model 85 article 84 genetics 81 physiology 79 protein expression 77 drug effects 73 unclassified drug 68 Male 67 human 67 Humans 65 pathology 61 adult 59 cytology 52 in vitro study 50 in vivo study 45