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?

Question

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

Answer

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

Answer

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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