dopamine 2 receptor 98 Animals 88 nonhuman 88 Receptors, Dopamine D2 86 priority journal 82 animal experiment 70 article 70 controlled study 70 mouse 66 Mice 62 Male 50 male 50 Mice, Knockout 48 animal tissue 46 Female 44 Dopamine 40 female 38 Dopamine Antagonists 32 animal 32 animal model 32 Mice, Inbred C57BL 30 dopamine 30 knockout mouse 28 metabolism 28 messenger RNA 26 prolactin 26 Prolactin 24 animal cell 24 protein expression 24 Receptors, Dopamine D1 22