Tags: Chemical Compound, Chemical Substance.
Sialyl LewisA also known as sialyl LeA and SLeA is a tetrasaccharide carbohydrate that is usually attached to O-glycans on the surface of cells. It is known to play a vital role in cell-to-cell recognition processes. Occurrence of the Sialyl Lewis A antigen detected with the CA19-9 antibody is highly correlated advanced epithelial cancers such as stage III and stage IV colorectal cancers.
