Mark the correct statement

Options

A. The anamnestic respons against a pathogen is highly intensified
B. The T-lymphocytcs produce antibodies
C. The B-lymphocyte produces cell-mediated response
D. An antibody is represented by `H_(2)L_(4)`

Answer

To determine the correct statement among the given options, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding the Anamnestic Response**:
- The first statement mentions that the anamnestic response against a pathogen is highly intensified.
- The anamnestic response refers to the immune system's ability to respond more vigorously upon subsequent encounters with the same pathogen. This is due to the formation of memory cells during the first encounter, which allows for a quicker and stronger immune response during re-exposure.

2. **Evaluating the First Statement**:
- Since the anamnestic response indeed becomes more intense upon re-exposure to the same pathogen, this statement is **correct**.

3. **Analyzing the Second Statement**:
- The second statement claims that T-lymphocytes produce antibodies.
- This statement is **incorrect** because antibodies are produced by B-lymphocytes, not T-lymphocytes. T-lymphocytes play a different role in the immune response, primarily in cell-mediated immunity.

4. **Evaluating the Third Statement**:
- The third statement suggests that B-lymphocytes produce a cell-mediated response, which is actually produced by T-lymphocytes.
- This statement is also **incorrect**. B-lymphocytes are responsible for antibody-mediated immunity, while T-lymphocytes are involved in cell-mediated immunity.

5. **Conclusion**:
- After analyzing all the statements, the only correct statement is the first one regarding the anamnestic response.

### Final Answer:
The correct statement is: **The anamnestic response against a pathogen is highly intensified.**

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