Multiple Choice
Of all IgG subclasses,IgG3 has the largest hinge region,making it:
A) the only subclass capable of crossing the placenta.
B) the subclass with the highest number of antigen binding sites.
C) the most efficient subclass for activating complement.
D) incapable of opsonization.
Correct Answer:

Verified
Correct Answer:
Verified
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