Female female 134 genetics nonhuman Animals 126 animal 126 controlled study 101 priority journal 86 metabolism 83 Male 73 male 73 Article 72 animal experiment 65 mouse 63 Mice 61 article 60 animal tissue 54 animal cell 52 human 50 Humans 43 adult 43 protein expression 43 animal model 35 gene expression 34 pathology 33 physiology 30 unclassified drug 29 gene expression regulation 27 immunohistochemistry 25 messenger RNA 24