Cell mediated immunity is provided by

Options

A. B-lymphocytes
B. Plasma cells
C. T-lymphocytes
D. Thymus cells or Thymocytes

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Mediated Immunity**: Cell mediated immunity is a type of immune response that is primarily mediated by certain types of white blood cells rather than antibodies.

2. **Identifying Key Players**: The main cells involved in cell mediated immunity are T lymphocytes (also known as T cells). They play a crucial role in recognizing and responding to infected or abnormal cells.

3. **Role of T Lymphocytes**: T lymphocytes can be further categorized into different types, such as cytotoxic T cells, which directly kill infected cells, and helper T cells, which assist in activating other immune cells.

4. **Distinguishing Between B and T Lymphocytes**: While B lymphocytes (B cells) are responsible for humoral immunity (producing antibodies), they do not directly participate in cell mediated immunity. Instead, they produce antibodies that target pathogens in the bloodstream.

5. **Conclusion**: Therefore, cell mediated immunity is specifically provided by T lymphocytes, which are also referred to as thymocytes due to their development in the thymus gland.

**Final Answer**: Cell mediated immunity is provided by T lymphocytes.

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