the inhibition of calcium oxalate crystal growth by the glycosaminoglycans , chondroitin sulphates and heparin , by the low-molecular-weight heparin analogue pentosan polysulphate and by tamm-horsfall glycoprotein extracted from human urine , was measured by using a seeded crystal procedure and compared with the inhibition by pyrophosphate .
C0019134
heparin
C0019139
low-molecular-weight heparin