Animals Female animal female 309 metabolism nonhuman 213 controlled study 186 mouse 138 priority journal 138 animal experiment 136 article 132 Mice 126 male 122 Male 120 Article 118 animal cell 118 genetics 111 physiology 105 animal tissue 104 human 83 animal model 82 protein expression 81 Humans 78 cytology 74 pathology 72 drug effects 71 unclassified drug 67 gene expression 58 immunohistochemistry 55 adult 53