Biochimica et Biophysica Acta 843(1–2), 155–158 (22 November 1985); DOI 10.1016/0304-4165(85)90063-7. Primary abstract: isolated sulfated fraction, gel-filtration heterogeneity, galactose/N-acetylglucosamine disaccharide backbone, susceptibility to keratan sulfate endo-beta-galactosidase. Initial-only byline retained.