Which of the following cells of connective tissue secrete antibodles ?

Options

A. Mast cells
B. Reticular cells
C. Adipose cells
D. Plasma cells

Answer

To answer the question "Which of the following cells of connective tissue secrete antibodies?", we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks which cells in connective tissue are responsible for secreting antibodies. Antibodies are proteins produced by the immune system to identify and neutralize pathogens like bacteria and viruses.

2. **Evaluating Option A: Mast Cells**:
- Mast cells are involved in the immune response and are primarily known for releasing histamine and heparin during allergic reactions and inflammation.
- **Conclusion**: Mast cells do not secrete antibodies. Therefore, this option is incorrect.

3. **Evaluating Option B: Reticular Cells**:
- Reticular cells are responsible for producing the fibers that form the structural framework of lymphoid organs.
- They provide support but do not play a role in antibody secretion.
- **Conclusion**: Reticular cells do not secrete antibodies. This option is also incorrect.

4. **Evaluating Option C: Adipose Cells**:
- Adipose cells, or adipocytes, are primarily involved in storing energy in the form of lipids.
- They do not have a role in the immune response or in the secretion of antibodies.
- **Conclusion**: Adipose cells do not secrete antibodies. This option is incorrect.

5. **Evaluating Option D: Plasma Cells**:
- Plasma cells are differentiated from B lymphocytes and are a crucial part of the immune system.
- Upon encountering an antigen, plasma cells secrete large amounts of antibodies to combat the pathogen.
- **Conclusion**: Plasma cells are the correct answer as they are responsible for antibody secretion.

### Final Answer:
The cells of connective tissue that secrete antibodies are **Plasma Cells** (Option D).

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