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Q. Which of the following option about various types of antibodies is correct?

NTA AbhyasNTA Abhyas 2022

Solution:

There are five types of antibodies IgG, IgA, IgM, IgD, and IgE. IgG is the most abundant antibody-forming 80% of the total antibodies. It is the only antibody that can pass through the placenta. It is formed in the secondary immune response. It has a structure of a typical antibody having 4 peptides arranged in a Y shape manner. IgM is the largest in size (5 times greater than IgG). It is formed in the primary immune response. It is a pentamer having 5 such Y shaped structures.