GangliosidesNeuraminic AcidsBrain ChemistryG(M3) GangliosideG(M1) GangliosideChromatography, Thin LayerSpectrometry, Mass, Fast Atom BombardmentNeuraminidaseBrainG(M2) GangliosideGlycosphingolipidsBrain InjuriesBrain NeoplasmsSialic AcidsCarbohydrate SequenceBrain MappingSialyltransferasesN-Acetylneuraminic AcidN-AcetylgalactosaminyltransferasesGlycolipidsSulfoglycosphingolipids