Description_x000D_ Application_x000D_ E-Toxate endotoxin standard was used along with the limulus amebocyte lysate assay kit to determine the concentration of endotoxins in isolated samples of human holotransferrin and apotransferrin used to treat primary hepatocyte cultures._x000D_ Other Notes_x000D_ A preparation of E. coli 055:B5 lipopolysaccharide_x000D_ Can be stored at 2-8 °C when stored separately from the E-Toxate kit._x000D_ Analysis Note_x000D_ Standardized against USP reference standard endotoxin (RSE)_x000D_ Legal Information_x000D_ E-Toxate is a trademark of Sigma-Aldrich Co. LLC