Card 2 / 24: Humoral immunity is based on __________ in upper respiratory and ___________ in lower respiratory system.
A)
IgG, IgA
B)
IgA, IgG
C)
IgM, IgA
D)
IgA, IgM
E)
IgE, IgA
Answer:
B) IgA, IgG
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