
BSA is high purity fraction V protein derived from bovine plasma. The material is fractioned by a heat-shock method which is designed to inactivate proteases and other potentially interfering enzymes.
Transferring is a highly purified protein from bovine serum or plasma. It is an essential and necessary growth factor that servers as a transport protein, delivering iron to the cell in many serum-free media formulations, and ensuring iron utilization and metabolic regulation without toxic effects.
Fetuin is highly purified fractionated protein containing critical growth factors and is used as a supplement in serum-free media formulations to promote cell growth.