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Albumin is the most abundant protein in the blood and functions in the regulation of blood plasma colloid osmotic pressure. It also acts as a carrier protein for a wide range of endogenous molecules including hormones, fatty acids, and metabolites, as well as exogenous drugs. Bovine Serum Albumin (BSA) is widely used as a protein standard, carrier protein and stabilizer in laboratory research.
Sulfhydryl-blocked bovine serum albumin has free thiol groups blocked to minimize polymerization upon storage, which yields a high monomer albumin product.