What salivary protein is important for the transport of dietary vitamin B₁₂ to the small intestine?

Question

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Haptocorrin is a salivary protein that binds vitamin B₁₂ found in food.In the small intestine the vitamin is released from haptocorrin by the action of trypsin.IF is then required for its absorption into circulation.Transcobalamin is the most important of the plasma carrier proteins for vitamin B₁₂.

What Salivary Protein Is Important for the Transport of Dietary