TF and neoplasm: The carbohydrate antigens that have been found to be tumor-associated (Table 1) include the mucin related Tn, sialyl Tn and Thomsen-Friedenreich (TF/T) antigens, the blood group Lewis-related Lewis(Y), Sialyl Lewis(X) (SLeX) and Sialyl Lewis(A) (SLeA), and Lewis(X) (also known as stage-specific embryonic antigen-1, SSEA-1), the glycosphingolipids, Globo H, and stage-specific embryonic antigen-3 (SSEA-3), the sialic acid containing glycosphingolipids, the gangliosides, GD2, GD3, GM2, fucosyl GM1 and Neu5GcGM3 and polysialic acid.