A person without thymus would not be able to

Options

A. Reject a tissue transplant
B. Receive a tissue transplant
C. Develop an inflammatory response
D. Produce antibodies

Answer

### Step-by-Step Solution:

1. **Understanding the Thymus Gland**: The thymus gland is an important organ located at the dorsal side of the heart. It plays a crucial role in the immune system, particularly in the maturation of T lymphocytes (T cells), which are essential for immune responses.

2. **Role of T Lymphocytes**: T lymphocytes are a type of white blood cell that is vital for the immune response. They help the body distinguish between self (the body’s own cells) and non-self (foreign cells, such as those from a tissue transplant).

3. **Consequences of Thymus Absence**: In a person without a thymus, there would be a lack of mature T lymphocytes. This means that the person would not be able to effectively mount an immune response to foreign tissues, such as those from a transplant.

4. **Analyzing the Options**:
- **Reject a tissue transplant**: Without mature T cells, the body cannot recognize and reject foreign tissue, making this option likely correct.
- **Receive a tissue transplant**: The absence of a thymus does not prevent a person from receiving a transplant; it affects the ability to reject it.
- **Develop an inflammatory response**: While T cells are important, other components of the immune system can still initiate an inflammatory response.
- **Produce antibodies**: This function is primarily associated with B lymphocytes, which mature in the bone marrow, not the thymus.

5. **Conclusion**: Based on the analysis, a person without a thymus would primarily be unable to reject a tissue transplant due to the lack of mature T lymphocytes.

### Final Answer:
A person without a thymus would not be able to **reject a tissue transplant**.