Figure 3From: Lactoferrin translocates to the nucleus of bovine rectal epithelial cells in the presence of Escherichia coli O157:H72D gel electrophoresis of bLF purified from milk. One μg of tropomyosin, giving a lower polypeptide spot of a molecular weight of 33 000, pI 5.2, was added to the samples as internal marker (short arrow). Sample A (right longer arrow) and B (left longer arrow), as the two protein spots used for LC–MS/MS.Back to article page