Which of the following class of antibody is primarily found in external secretions?
A) IgA
B) IgD
C) IgG
D) IgE
E) IgM

Question

Quizplus · Accepted Answer

IgA is primarily found in external secretions such as saliva, tears, breast milk, and respiratory and intestinal secretions, where it plays a crucial role in preventing infections caused by pathogens. The other classes of antibodies (IgD, IgG, IgE, and IgM) are mainly found in the bloodstream and have different functions in the immune response.

Which of the Following Class of Antibody Is Primarily Found