Immunoglobulins that are most abundant and are responsible for resistance against many viruses, bacteria,and bacterial toxins are
A) IgA.
B) IgD.
C) IgE.
D) IgG.
E) IgM.

Question

Quizplus · Accepted Answer

IgG is the most abundant immunoglobulin in the bloodstream and is responsible for providing resistance against many viruses, bacteria, and bacterial toxins. It is also the only immunoglobulin that can cross the placenta from a pregnant woman to her fetus, providing passive immunity to the newborn.

Immunoglobulins That Are Most Abundant and Are Responsible for Resistance