Area PostremaCerebral VentriclesMedulla OblongataMitochondria, LiverFourth VentricleEmeticsEstradiol AntagonistsBrain StemProto-Oncogene Proteins c-fosVomitingShrewsVagus NerveSubfornical OrganMethiothepinPressoreceptorsRats, Sprague-DawleyOncogene Proteins v-fosMicroinjectionsInjections, IntraventricularDenervationNeuromyelitis OpticaBlood PressureCarotid SinusParaventricular Hypothalamic NucleusSympathetic Nervous SystemArabinoseNeuronsFerretsArginine VasopressinLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsHeart RateAutoradiographyStomachBaroreflexAngiotensin IIVasopressinsGenes, fos