Type of immunoglobulin present in colostrum/only mother's milk is

Options

A. IgA
B. IgG
C. IgD
D. IgE

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the type of immunoglobulin that is specifically present in colostrum or mother's milk.

2. **Identifying the Options**: The options given are:
- IgA
- IgG
- IgD
- IgE

3. **Researching Immunoglobulins**:
- **IgA (Immunoglobulin A)**: This immunoglobulin is found in various secretions including saliva, tears, sweat, and notably, colostrum and milk.
- **IgG (Immunoglobulin G)**: This is the most abundant immunoglobulin in blood and is also present in lymph and intestinal fluid but is not specifically mentioned as being in colostrum.
- **IgD (Immunoglobulin D)**: This immunoglobulin is primarily found on the surface of B-lymphocytes and is not present in colostrum.
- **IgE (Immunoglobulin E)**: This is associated with allergic reactions and is found in mast cells and basophils, not in colostrum.

4. **Conclusion**: Since IgA is the only immunoglobulin that is specifically mentioned to be present in colostrum, the correct answer is IgA.

5. **Final Answer**: The type of immunoglobulin present in colostrum/only mother's milk is **IgA**.

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