Secretory IgA is a class of antibodies linked to the mucosal immune system. Regarding the transport of IgA across epithelial cells, which statement is true?

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Answer

The secreted form of the Poly-Ig receptor binds to IgM. As a result, IgA is secreted

Answer

IgA-dimers are transported from the lamina propria to the lumen via so-called transcytosis

Answer

IgA is not transported by epithelial cells, instead directly secreted by plasma cells into the lumen

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IgA are associated with CD8 molecules and then secreted to the lumen

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IgA are tetramers in the mucosal immune system

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Secretory IgA is a class of antibodies linked to the mucosal immune system. Rega...

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