the degree of contamination of pure nephritogenoside by this substance that is antigenically the same as heymann 's antigen ( in pure nephritogenoside ) can be chemically and accurately determined , based on the evidence that pure nephritogenoside is a glycopeptide having only three glucose residues as the sugar moiety , that is , by estimating the amount of contaminated monosaccharide components such as galactose , mannose , and n-acetylglucosamine .
C0007004
sugar
C0026492
monosaccharide