Life of the effector cells of immune system is

Options

A. A few weeks to several years
B. A few days
C. A few years
D. A few months to whole life

Answer

To answer the question about the life of effector cells of the immune system, we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understand the Role of Effector Cells**: Effector cells are activated immune cells that play a crucial role in the immune response. They are responsible for defending the body against pathogens.

2. **Identify Types of Effector Cells**: The main types of effector cells include T cells and B cells. B cells, when activated, differentiate into plasma cells, which secrete antibodies.

3. **Determine the Lifespan of Effector Cells**: Effector cells are generally characterized by their relatively short lifespan. They are designed to respond quickly to infections but do not persist for long periods.

4. **Evaluate the Options**: The options provided for the lifespan of effector cells are:
- A) A few weeks to several years
- B) A few days
- C) A few years
- D) A few months to hold life

5. **Select the Correct Option**: Based on the understanding that effector cells, such as plasma cells, typically have a lifespan of only a few days, the correct answer is:
- **B) A few days**.

### Final Answer:
The life of effector cells of the immune system is **a few days**.

---