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Iron removal from transferrin by A. fumigatus. A. fumigatus was cultured in MEM containing 2.5 μM purified human holotransferrin (A) or 10% human serum (B). Culture media were withdrawn, and the iron saturation of transferrin was analyzed by urea-PAGE. Transferrin was visualized by Western blotting. The numbers above the lanes represent the hours of incubation with A. fumigatus. Fe2-Tf, holotransferrin; Apo-Tf, apotransferrin.
