Silica GelSilicon DioxideGelsChromatography, Thin LayerChromatography, High Pressure LiquidFermentationPhysicochemical PhenomenaChemistry, PhysicalSilicosisStreptomycesSpectrophotometry, InfraredBenzylammonium CompoundsMagnetic Resonance SpectroscopyBoric AcidsAdsorptionEthylenethioureaMolecular StructureChromatographyIndicators and ReagentsSilver NitrateHexanesForssman AntigenCoccidiostatsSpectrometry, Mass, Fast Atom BombardmentChromatography, GasSpectrophotometry, UltravioletChemistryDensitometryMetals, Rare EarthPlant ExtractsChemical PhenomenaEnzymes, ImmobilizedSpectrophotometry, AtomicCerebrosidesMethodsMicrochemistryHydrogen-Ion ConcentrationSilanesNiobiumSurface PropertiesMass SpectrometryStereoisomerismGlycolipidsStigmasterolFungiElectrophoresis, Gel, Two-Dimensional