Question

Which is not a T-lymphocytes?

• A. Helper
• B. Suppressor
• C. Cytotoxic
• D. Repressor

Answer 1

The correct option is D Repressor

• A T cell, or T lymphocyte, is a type of lymphocyte (a subtype of white blood cell) that plays a central role in cell-mediated immunity. T cells can be distinguished from other lymphocytes, such as B cells and natural killer cells, by the presence of a T-cell receptor on the cell surface. T-cells are originated from bone marrow and mature in the thymus gland.
  
• There are 3 main types of T-cells in mammals. They are - cytotoxic cells ( destroy virus-infected cells and tumour cells), helper cells (assist other WBC in immunologic processes including maturation of B cells into plasma cells and memory B cells, and activation of cytotoxic T cells and macrophages and suppressor cells (stop T cell-mediated immunity toward the end of an immune reaction).
  

So, the correct answer is 'Repressor'.