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Yerima, A. and Safi, A. and Gastin, I. and Michalski, J.-C. and Saunier, M. and Gueant, J.-L. (1996) Purification by cobalamin-Sepharose affinity chromatography and intrinsic factor-binding activity of an extramembrane proteolytic product from pig ileal mucosa. Biochemical Journal, 313 (2). pp. 675-681.
