Silica GelSilicon DioxideGelsChromatography, Thin LayerChromatography, High Pressure LiquidFermentationPhysicochemical PhenomenaChemistry, PhysicalSilicosisStreptomycesSpectrophotometry, InfraredBenzylammonium CompoundsMagnetic Resonance SpectroscopyBoric AcidsEthylenethioureaAdsorptionMolecular StructureChromatographyCoccidiostatsForssman AntigenSilver NitrateHexanesSpectrometry, Mass, Fast Atom BombardmentIndicators and ReagentsMetals, Rare EarthDensitometryPlant ExtractsSpectrophotometry, UltravioletSpectrophotometry, AtomicEnzymes, ImmobilizedChemistryChromatography, GasChemical PhenomenaCerebrosidesMethodsNiobiumSilanesMicrochemistrySurface PropertiesHydrogen-Ion ConcentrationMass SpectrometryStigmasterolStereoisomerismFungiGlycolipids