The predominant antibody in saliva is

Options

A. IgA
B. IgDD
C. IgC
D. IgM

Answer

**Step-by-Step Solution:**

1. **Understanding Antibodies**: Antibodies, also known as immunoglobulins (Ig), are proteins produced by the immune system to identify and neutralize foreign objects like viruses and bacteria. They have a Y-shaped structure.

2. **Types of Antibodies**: There are several classes of antibodies, including IgA, IgD, IgG, and IgM. Each type has different functions and locations in the body.

3. **Identifying the Predominant Antibody in Saliva**: The question specifically asks for the predominant antibody found in saliva.

4. **Function of IgA**: Among the different types of antibodies, IgA is known to be present in various secretions, including saliva, tears, and breast milk. It plays a crucial role in mucosal immunity.

5. **Conclusion**: Based on the information gathered, the predominant antibody in saliva is **IgA**.

**Final Answer**: The predominant antibody in saliva is **IgA**.

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