1. Cooper HS, Haesler W. Blood group substances as tumor antigens in the distal colon. Am J Pathol 1978;69:594?598.
2. Kirshuner JB, Shorter RG. Diseases of the colon, rectum, and canal. Baltimore: Williams and Wilkins, 1988;65?94.
3. Smets LA, Beek WPV. Carbohydrates of the tumor cell surface. Biochem Biophys Acta 1984;738:237?249.
4. Goldstein IJ, Hayes CE. The lectins: Carbohydrate-binding proteins of plants and animals. Adv Carbohydr Chem Biochem 1978;35:127?135.
5. Katsuyama T, Ono K, Nakayama J, et al. Gastric mucus and mucus secreting cells. In: Kawai K (ed). Recent advances in mucosubstance histochemistry. Amsterdam: Excerpta Medica, 1985;3?18.