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Dot blot demonstrating competition between native Tfs and biotinylated bovine, goat, and ovine Tfs for binding sites on total membranes from H. somnus strain 649 grown under iron-restricted conditions in the presence of bovine Tf. The competing Tfs, abbreviated as in Fig. 1, are indicated on the left side of the figure, and the presence (0.1 [mg]) and absence (0) of the competing Tfs are indicated along the top.
