animal article female metabolism Female 172 Animals 146 nonhuman 114 controlled study 88 animal cell 80 priority journal 80 animal experiment 78 mouse 72 Mice 70 rat 66 drug effect 63 genetics 63 Rats 62 physiology 60 male 53 Male 47 animal tissue 46 Animal 44 cytology 43 human 43 animal model 42 in vitro study 42 Humans 38 unclassified drug 37 cell culture 35 protein expression 34