Silica GelLitter SizeSilicon DioxideGelsChromatography, Thin LayerChromatography, High Pressure LiquidFermentationPhysicochemical PhenomenaChemistry, PhysicalSilicosisStreptomycesSpectrophotometry, InfraredBenzylammonium CompoundsMagnetic Resonance SpectroscopyWeaningLactationSwineBoric AcidsEthylenethioureaAdsorptionMolecular StructureChromatographyAnimals, SucklingCoccidiostatsForssman AntigenSilver NitrateHexanesSpectrometry, Mass, Fast Atom BombardmentIndicators and ReagentsBreedingReproductionMetals, Rare EarthPregnancyPlant ExtractsDensitometrySpectrophotometry, UltravioletSpectrophotometry, AtomicEnzymes, ImmobilizedChemistryFungiChromatography, GasChemical PhenomenaCerebrosidesMethodsNiobiumSilanesMicrochemistryHydrogen-Ion ConcentrationSurface PropertiesBody WeightStigmasterolMass SpectrometryStereoisomerismGlycolipids