Male male 422 metabolism animal 359 Animals 313 nonhuman 218 controlled study 216 article 213 female 182 Female 174 animal experiment 165 priority journal 164 physiology 159 Article 154 mouse 125 genetics 120 animal tissue 110 Mice 107 human 107 Humans 97 adult 88 drug effects 87 animal cell 86 rat 86 drug effect 79 Rats 78 protein expression 78 unclassified drug 73 in vitro study 69 pathology 65