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What Is the Function of the TNF-Family Cytokine APRIL Made

Question 16

Multiple Choice

What is the function of the TNF-family cytokine APRIL made by epithelial cells of the colon?


A) elevates rate of M-cell proliferation
B) degrades IgA1
C) mediates isotype switching from IgM to IgA2
D) binds to J chain of dimeric IgA
E) upregulates MAdCAM-1 production.

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