The most common circulating antibody, comprising about 80% of the serum immunoglobin, is
A) IgG.
B) IgA.
C) IgC.
D) IgD.

Question

Quizplus · Accepted Answer

IgG is the most common circulating antibody, comprising about 80% of the serum immunoglobin. IgA is found in secretions like saliva, tears, and breast milk. IgC is not a type of immunoglobin. IgD is found mainly on the surface of B cells and is involved in their activation.

The Most Common Circulating Antibody, Comprising About 80% of the Serum