Female Male Mice mouse Animals 135 nonhuman 126 female 118 male 111 article 107 controlled study 103 priority journal 100 animal experiment 96 animal tissue 61 animal 48 animal model 48 protein expression 46 animal cell 44 Mice, Inbred C57BL 38 Mice, Knockout 37 Animalia 31 Humans 30 metabolism 29 Mice, Inbred BALB C 28 adult 26 human 26 Mus 24 unclassified drug 23 Article 22 Receptors, Dopamine D2 22 genetics 22