Which of the following is not main function of lymph nodes ?

Options

A. Forming WBC
B. Forming antibodies
C. Forming RBC
D. Destroying bacteria

Explanation

**Step-by-Step Solution:**

1. **Understanding Lymph Nodes**: Lymph nodes are secondary lymphoid organs that play a crucial role in the immune system. They are involved in filtering lymph fluid and facilitating immune responses.

2. **Functions of Lymph Nodes**: The main functions of lymph nodes include:
- **Filtering lymph**: They trap pathogens and foreign particles.
- **Antigen Presentation**: They provide a microenvironment for antigen-presenting cells to interact with lymphocytes.
- **Formation of Antibodies**: B lymphocytes (B cells) in the lymph nodes can differentiate into plasma cells that produce antibodies.
- **Production of White Blood Cells (WBCs)**: Lymph nodes contribute to the proliferation of lymphocytes, which are a type of WBC.

3. **Identifying the Incorrect Function**: The question asks for a function that is NOT associated with lymph nodes. Among the functions listed:
- **Formation of RBCs (Red Blood Cells)** is NOT a function of lymph nodes. This process occurs in the bone marrow, which is the primary site for RBC production.

4. **Conclusion**: Therefore, the correct answer to the question is that the formation of RBCs is not a main function of lymph nodes.

**Final Answer**: The function that is NOT associated with lymph nodes is the formation of RBCs.

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