2) Murata K, Ishikawa T, Oshima Y: Enzymatic studies of urinary chondroitin sulfates in normal and systemic connective tissue disease states. Clin Chim Acta 28: 213-222, 1970
3) Kanwar YS, Farquhar MG : Presence of heparan sulfate in the glomerular basement membrane. Proc Natl Acad Sci USA 76: 1303-1307, 1979
4) Kanwar YS, Linker A, Farquhar MG : Increased permiability of the glomerular basement membrane to ferritin after removal of glycosaminoglycans (heparan sulfate) by enzyme digestion. J Cell Bio 86: 688-693, 1980
5) Lubec G, Legenstein E, Pollak A, Mezik: Glomerular basement membrane change, HbAlc and urinary excretion of acid glycosaminoglycans in children with diabetes mellitus. Clin Chim Acta 103: 45-49, 1980