Female Male Mice nonhuman Animals 134 mouse 126 priority journal 112 article 110 female 107 controlled study 105 male 100 animal experiment 98 animal tissue 65 animal model 52 protein expression 52 animal cell 46 Mice, Inbred C57BL 38 Mice, Knockout 37 Humans 36 animal 33 human 32 unclassified drug 29 Animalia 27 Mice, Inbred BALB C 26 adult 26 metabolism 25 Mus 24 Article 22 gene expression 21 Receptors, Dopamine D2 20