The immunoglobulin class that has a dimer form found in mucus, saliva, colostrum, and other body secretions is ______.

Question

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Immunoglobulin A (IgA) is the class of antibody that exists in a dimer form and is found in body secretions like mucus, saliva, colostrum, and breast milk. This dimer form is made up of two IgA monomers joined by a J chain, and a secretory component is added to it before being secreted into the body fluids.

The Immunoglobulin Class That Has a Dimer Form Found in Mucus