The dyhamlc change of static acid In malignant carcinoma of digestive tract

Sialic acid (SA) is a kind of important Component of glacoprotein and glucolipide in the cellmembrane of eukaryotes. The result showed that the dynamic observation of SA has some clinicalValue in judging the existeuce or nonexisteuce of long distance metastasis and the climical course ofmalingrant carcixone of digestive traet.