Abstract

Monoclonal antibody 14.2, directed against the GalNAc beta 3Gal alpha 3Gal beta epitope, was used to monitor the isolation of a novel glycosphingolipid from rat testes. Structural analysis was performed by mass spectrometry, proton NMR spectroscopy, gas chromatography-mass spectrometry after degradation, and exoglycosidase digestion. It was concluded that the structure was [formula: see text] This is the first report on an extended blood group B determinant.

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