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Tumor marker and glycoprotein
Tumor-associated glycoproteins (TAGs) are glycoproteins found on the surface of many cancer cells. They are mucin-like molecules with a molar mass of over 1000 kDa.
Sheer, Donald G.; Schlom, J; Cooper, HL (1988). "Purification and Composition of the Human Tumor-associated Glycoprotein (TAG-72) Defined by Monoclonal Antibodies CC49 and B72.3". Cancer Research. 48 (23): 6811–6818. PMID3180090.