The most abundant circulating antibody,the one that normally makes up about 75% of all the antibodies in the blood,is:
A) IgG.
B) IgA.
C) IgE.
D) IgM.

Question

Quizplus · Accepted Answer

IgG is the most abundant circulating antibody in the blood, accounting for around 75% of all antibodies. It is the main antibody produced in the secondary immune response and is important for fighting bacterial and viral infections. IgA is mainly found in mucosal secretions such as saliva and tears, IgE is involved in allergic reactions, and IgM is the first antibody produced in response to an infection.

The Most Abundant Circulating Antibody,the One That Normally Makes Up