Which immunoglobulin is transported most efficiently across mucosal epithelium?

Name: Which immunoglobulin is transported most efficiently across mucosal epithelium?
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Question

Quizplus · Accepted Answer

IgA is the most efficient immunoglobulin in crossing mucosal epithelium due to the presence of a specialized transport mechanism called the polymeric immunoglobulin receptor (pIgR) on the epithelial cells. This facilitates the transport of dimeric IgA through the epithelial cells and into the mucosal secretions.

Which Immunoglobulin Is Transported Most Efficiently Across Mucosal Epithelium