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Question
IgE ______.
Options
is bound together by J chain
binds to mast cells through its Fab region
differs from IgG antibody because of its different H chains
is present in high concentration in serum
MCQ
Fill in the Blanks
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Solution
IgE differs from IgG antibody because of its different H chains.
Explanation:
IgE has a unique epsilon (ε) heavy chain, which makes it different from IgG (which has gamma (γ) chains). It occurs in very low concentration in serum and binds to mast cells through its Fc (fragment crystallizable) region, not Fab (fragment antigen-binding).
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