studies of the removal of sialic acids from bovine submandibular mucin and rat colonic epithelial glycoproteins indicated that ( i ) the faecal enzymes removed a greater proportion of the sialic acid of both the de-o-acetylated and native glycoproteins than was removed with vibrio cholera neuraminidase , ( ii ) sialic acids were removed more rapidly from de-o-acetylated glycoproteins , and ( iii ) the resistance to removal of sialic acids was apparently dependent at least in part upon the o-acetyl sialic acid content of the substrate .
C0903677
epithelial
C0017968
glycoproteins