HistocytochemistryGlycoconjugatesNADPH DehydrogenaseLectinsIn Situ HybridizationAcetylcholinesteraseImmunohistochemistryPeriodic Acid-Schiff ReactionPeanut AgglutininStaining and LabelingPlant LectinsRNA, MessengerMicroscopy, ElectronMucinsSuccinate DehydrogenaseAcid PhosphataseRats, Sprague-DawleyRNA ProbesWheat Germ AgglutininsAutoradiographyXenarthra3,3'-DiaminobenzidineBrainNeuronsImmunoenzyme TechniquesRats, Inbred StrainsHistological TechniquesElectron Transport Complex IVTissue DistributionNitroblue TetrazoliumAlkaline PhosphataseMicrotomyRats, WistarHydroxydopaminesMuscle Fibers, Fast-TwitchGene ExpressionAcetylgalactosamineNitrergic NeuronsFucoseParaventricular Hypothalamic NucleusNitric Oxide Synthase Type ICell Countbeta-GalactosidaseNucleotidasesAnimals, NewbornCholine O-AcetyltransferaseSupraoptic NucleusNucleic Acid HybridizationEsterasesColoring AgentsReceptor, Parathyroid Hormone, Type 2Hirschsprung DiseaseHorseradish PeroxidaseHypothalamusAlcian BlueMetaplasiaExocrine GlandsMuscle Fibers, SkeletalBrain Tissue TransplantationOrchidaceaeHematoxylinMucusEnkephalinsMicroscopy, Electron, ScanningNitric Oxide SynthaseOrgan SpecificityEpitheliumRats, Inbred F344Apocrine GlandsSulfur RadioisotopesSerous MembraneMuscle Fibers, Slow-TwitchTyrosine 3-MonooxygenaseDynorphinsCholinergic FibersHistory, 21st CenturyPreoptic AreaFluorescent Antibody TechniqueFetusNerve FibersConnective Tissue CellsAdenosine TriphosphatasesTime FactorsMuscle, SkeletalMucous MembraneFixativesMice, Inbred C57BLMolecular Sequence DataBlotting, NorthernMyosin Heavy ChainsOligonucleotide ProbesRectumN-Acetylneuraminic AcidCorticotropin-Releasing HormoneSpinal CordSkinGlial Fibrillary Acidic ProteinMusclesCapillariesTissue Fixation