Which one secretes antibody

Options

A. Neutrophil
B. Eosinophil
C. Lymphocyte
D. Monocyte

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks which type of cell secretes antibodies. Antibodies are proteins produced by the immune system to identify and neutralize pathogens like bacteria and viruses.

2. **Analyzing the Options**:
- **Neutrophils**: These are a type of white blood cell and a part of the innate immune system. They are primarily involved in the phagocytosis of pathogens but do not secrete antibodies.
- **Eosinophils**: These are also white blood cells that play a role in combating parasites and are involved in allergic reactions. They do not secrete antibodies either.
- **Lymphocytes**: This group includes B-lymphocytes (B-cells), which are specifically responsible for the production of antibodies. When B-cells encounter an antigen, they can differentiate into plasma cells that secrete large quantities of antibodies into the bloodstream.
- **Monocytes**: These are another type of white blood cell that helps in the immune response but does not secrete antibodies.

3. **Identifying the Correct Answer**: Among the options, only lymphocytes (specifically B-lymphocytes) are responsible for the secretion of antibodies. Therefore, the correct answer is lymphocytes.

4. **Conclusion**: The cell type that secretes antibodies is lymphocytes, particularly B-lymphocytes.