35.IgA的secretory component是由下列何種分子而來?
(A)poly-Ig receptor
(B)neonatal Fc receptor
(C)IgA Fc receptor
(D)J chain
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統計: A(1122), B(47), C(332), D(356), E(0) #1632321
統計: A(1122), B(47), C(332), D(356), E(0) #1632321