FixativesOsmiumTissue FixationFormaldehydeHistological TechniquesGlutaralPreservation, BiologicalPolyvinyl AlcoholStaining and LabelingParaffin EmbeddingAir MicrobiologyOsmium TetroxideAerosol PropellantsNebulizers and VaporizersMicroscopy, ElectronAldehydesAdministration, InhalationParticle SizeProtozoan InfectionsAcetic AcidHistologySpecimen HandlingAcid RainParaffinPicratesHistocytochemistryAtmosphereEukaryotaInhalation ExposureTrifluoroacetic AcidHumidityMicrowavesCollodionHematoxylinParasitologyAir MovementsLungImmunohistochemistryNucleic AcidsAlcian BlueFreezingCytological TechniquesSulfuric AcidsMicroscopy, Electron, ScanningPowdersAcroleinTechnetium Tc 99m PentetateAir Pollutants, OccupationalEtherIntestinal Diseases, ParasiticSmogMandibular Condyle