the enrichment of fibronectin from cancerous cells in tri- and tetraantennary glycans and , in the same time , in sialic acid could be related : ( i ) to the decrease or loss of reactivity of the protein moiety of fibronectin by masking the lectin sites and ( ii ) to the disappearance of fibronectin from cancer tissues and , consequently , ( iii ) to the mechanism of the metastasis itself .
C0033684
protein
C0023206
lectin