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a SDS polyacrylamide gel electrophoresis of DMV International (left) and Sigma-Aldrich (right) bovine lactoferrin preparations. Lanes were loaded with 2.5, 5, and 10 μg of protein. Central lane was loaded with a molecular weight marker (two bands of 70 and 100 kDa denoted on the electropherogram). b SEC elution profile of DMV International lactoferrin obtained using the Superdex 200 10/300 GL column
