ParaffinParaffin EmbeddingFormaldehydeFixativesTissue FixationImmunohistochemistryImmunoenzyme TechniquesAnalgesicsHistocytological Preparation TechniquesTissue PreservationPainPain MeasurementStaining and LabelingFrozen SectionsInjections, SpinalMicrotomyDecalcification TechniqueProctitisNociceptive PainNociceptorsPlastic EmbeddingWaxesHematoxylinPolymerase Chain ReactionTissue EmbeddingKeroseneEosine Yellowish-(YS)HyperalgesiaRats, Sprague-DawleySpecimen HandlingTumor Markers, BiologicalSpinal CordMorphineBiopsyPreservation, BiologicalHistological TechniquesAcetic AcidAntibodies, MonoclonalMineral OilBehavior, AnimalTime FactorsMicrowavesHistocytochemistryPalatine TonsilTissue BanksCarrageenanNaloxoneFacial PainPain ThresholdDNA, NeoplasmAnalgesiaKi-67 AntigenIn Situ Hybridization, FluorescenceDissectionBreast NeoplasmsRats, WistarNeoplasm ProteinsAdenocarcinomaDisinfectantsEdemaAnalgesics, Non-NarcoticAnalgesics, OpioidSensitivity and SpecificityPloidiesAutopsyIn Situ HybridizationDose-Response Relationship, DrugAsepsisCyclohexanecarboxylic AcidsDigoxigeninDisease Models, AnimalNucleolus Organizer RegionPlant ExtractsAcute PainAntigens, NeoplasmInjections, SubcutaneousPneumonia, LipidProto-Oncogene Proteins c-fosOilsProliferating Cell Nuclear AntigenCaulerpaDihydroergocristinePeganumTolmetinPrognosisKeratinsReceptors, Neurokinin-1Receptors, EstrogenPathology, MolecularLymph NodesSilver StainingMicrodissectionNarcotic AntagonistsEpitheliumColoring AgentsHot TemperatureCryopreservationPosterior Horn CellsFluorescent Antibody TechniqueRetrospective Studies