Select the best answer or answers from the choices given: Which antibody class is abundant in body secretions? (a) IgA, (b) IgD, (c) IgE, (d) IgG, (e) IgM.
Select the best answer or answers from the choices given: Which antibody class is abundant in body secretions? (a) IgA, (b) IgD, (c) IgE, (d) IgG, (e) IgM.
The Y-shaped proteins produced by the body's immune system that function to bind a foreign particle or antigen and signal the immune system for the foreign particle's elimination are called antibodies. IgG, IgA, IgE, IgD, and IgM are the five classes of antibodies that work in the human immune system.
The antibodies belonging to the dimeric antibody class called the IgA are present in abundance in the body secretions like the mucosal secretions of digestive and urinogenital tracts, sweat, milk, serum, and saliva. It functions to inhibit bacteria's adhesion to the mucosal surfaces by neutralizing the bacterial toxins necessary for adhesion.
Hence, the option 'a' is correct.
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