Low density lipoproteins were biotinylated via free amino groups using carbodiimide-activated biotin or D-biotin-N-hydroxysuccinimide ester. The receptor binding activity of the biotinylated LDL was determined by their ability to displace 125I-labeled LDL from the rat hepatic LDL receptor in the liposome filtration assay. LDL biotinylated with either of the two reagents was able to co... https://www.bekindtopets.com/hot-offer-Stuart-Product-Emcelle-Tocopherol-Vitamin-E-Liquid-1-Liter-hot-value/