Corpus StriatumCorpus LuteumCorpus Callosum3,4-Dihydroxyphenylacetic AcidDopamineBrainReceptors, DopamineAgenesis of Corpus CallosumBerberineSubstantia NigraRats, Inbred StrainsRats, Sprague-DawleyNeuronsCorpora AllataPenisNeostriatumCorpus Luteum MaintenanceLuteolysisProgesteroneBasal GangliaPenile ErectionLuteal CellsLuteal PhaseDinoprostPseudopregnancyCorpus Luteum HormonesEstrusReceptors, Dopamine D2OvaryMagnetic Resonance ImagingPregnancyPutamenOxidopamineOvulationEstrous CycleAmyotrophic Lateral SclerosisDendritesSuperoxide DismutaseMotor NeuronsMice, TransgenicDendritic Spines