Life of the memory cells of immune system is

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding Memory Cells**: Memory cells are a type of lymphocyte (a white blood cell) that are part of the immune system. They are formed after an initial infection and are crucial for the body's long-term immunity.

2. **Function of Memory Cells**: The primary role of memory cells is to "remember" specific pathogens (like viruses or bacteria) that the body has encountered before. This allows the immune system to respond more quickly and effectively if the same pathogen invades again.

3. **Lifespan of Memory Cells**: The lifespan of memory cells can vary. Some memory cells can live for a few months, while others can persist for many years, even for the entire life of the individual.

4. **Conclusion**: Given the options provided (a few days, a few weeks, a few hours, a few months, to whole life), the most accurate answer regarding the lifespan of memory cells is "a few months to whole life."

**Final Answer**: The life of the memory cells of the immune system is a few months to whole life.

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