Friday 28 March 2014

FCPS part 1 Medicine solved mcqs with explanation Q11



Q11: Which of the followings is increased in first response?
a) IgM
b) IgD
c) IgE
d) IgG


Correct Answer: a


Explanation:
IgM is the antibody produced in primary response to an antigen. IgG is the main antibody in secondary response. IgM also fixes complement but does not cross placenta.

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