Match the questions with its following description
____ indicates a very recent infection
____ Accumulates in body secretions
____ Provides in body secretions
____ Is a cell surface receptor on the mast cell
____ is a major circulation antibody
____ Is also called gamma globulin
____ is a maternal antibody that crosses the placenta
____ involved in allergic reaction
____ Booster injections of a vaccine raise the level of this antibody
A- IgM
B- IgE
C- IgA
D- IgG
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