anatomy and physiology mcqs

Question #342

Which of the following is not a component of saliva?

Saliva contains several antibacterial products. Lysozyme has a key role in degrading bacterial cells. Lactoferrin chelates iron and thus deprives bacteria of this essential nutrient. Saliva contains IgA, rather than IgG, antibodies. These are secreted by mucosal surfaces throughout the gastrointestinal tract.

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