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Chromatographic profiles showing purification of 45-kDa HAP purified in the presence of EDTA. (a) Gel filtration chromatography on G-75 column of the pooled fractions from successively chromatographed proteins by G-200 and DE-52 columns. Absorbance is shown in arbitrary units (AU). (b) SDS-PAGE (12.5%) of the major peak showed the presence of 45- and 42-kDa bands. The positions (in kilodaltons) of molecular mass markers (MM) are shown to the left of the gel.
