Which of the following lymphoid organ does not provide the sites for the interaction of lymphocytes with the antigen, which then proliferate to become effector cells ?

Options

A. A.Tonsils
B. B.Peyer's patches
C. C.T-lymphocytes
D. D.B-lymphocytes

Answer

To solve the question regarding which lymphoid organ does not provide the sites for the interaction of lymphocytes with the antigen, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks which lymphoid organ does not facilitate the interaction between lymphocytes and antigens, leading to the proliferation of lymphocytes into effector cells.

2. **Identify the Lymphoid Organs**: The options provided are:
- Tonsils
- Peyer's patches
- T-lymphocytes
- B-lymphocytes

3. **Define the Function of Each Option**:
- **Tonsils**: These are secondary lymphoid organs that play a role in the immune response by interacting with antigens.
- **Peyer's Patches**: These are specialized lymphoid tissues in the small intestine that also interact with antigens, but they are unique in that their ability to interact with antigens is relatively low compared to other lymphoid organs.
- **T-lymphocytes and B-lymphocytes**: These are types of lymphocytes that are involved in the adaptive immune response. They do not refer to organs but are the cells that respond to antigens.

4. **Analyze the Options**:
- The tonsils and Peyer's patches are both lymphoid tissues that interact with antigens.
- T-lymphocytes and B-lymphocytes are not organs; they are the cells that respond to antigens.

5. **Determine the Correct Answer**: Since the question asks for a lymphoid organ, and among the options, Peyer's patches have a lower ability to interact with antigens compared to the tonsils, the correct answer is **Peyer's patches**.

### Final Answer:
**Peyer's patches** do not provide effective sites for the interaction of lymphocytes with antigens, making them the correct choice.

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