Plasma cells are derived from

Options

A. Cytotoxic T-cells
B. helper T- Cells
C. Memory B-cells
D. Memory T-cells

Answer

**Step-by-Step Solution:**

1. **Understanding Plasma Cells**: Plasma cells are specialized cells in the immune system that produce antibodies. They play a crucial role in the body's defense against pathogens.

2. **Identifying the Origin of Plasma Cells**: Plasma cells are derived from a specific type of white blood cell known as B cells. B cells are a part of the adaptive immune system and are responsible for the production of antibodies.

3. **Differentiation of B Cells**: When B cells encounter an antigen (a substance that triggers an immune response), they can differentiate into plasma cells. This differentiation is crucial for the immune response, as plasma cells produce large quantities of antibodies that target the specific antigen.

4. **Reviewing the Options**: The question provides multiple-choice options. We need to evaluate each option to determine which one correctly identifies the origin of plasma cells:
- **Cytotoxic T cells**: Incorrect, as these are derived from T cells, not B cells.
- **Helper T cells**: Incorrect, as these are also derived from T cells, not B cells.
- **Memory B cells**: Correct, as plasma cells are derived from B cells, and memory B cells are a type of B cell that can differentiate into plasma cells upon re-exposure to the same antigen.
- **Memory T cells**: Incorrect, as these are derived from T cells, not B cells.

5. **Conclusion**: Based on the analysis, the correct answer to the question "Plasma cells are derived from" is **Memory B cells**.

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