( 3 ) when the serine- or threonine-linked oligosaccharide fraction obtained from human glycophorin a was subjected to this system , two monosialosylated , trisaccharide-alditol isomers , namely , neuac- ( 2 to 3 ) -gal ( 1 to 3 ) -galnacol and gal- ( 2 to 3 ) - [ neuac- ( 2 to 6 ) ] -galnacol , could be separated from each other .
C0028959
oligosaccharide
C0041102
trisaccharide