Question

The cells which have CD - 8 markers on the cell membrane are

• A. B-lymphocytes
• B. Natural killer cells
• C. T-cytotoxic cells
• D. T-helper cells

Answer 1

The correct option is C T-cytotoxic cells

• A cytotoxic T cell (also known as TC, cytotoxic T lymphocyte, CTL, T-killer cell, cytolytic T cell, CD8+ T-cell or killer T cell) is a T lymphocyte (a type of white blood cell) that kills cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways..
  
• They have CD - 8 markers on the cell membrane.
• When cytotoxic T cells recognize (bind to) their target, they produce more FasL at their surface. This binds with the Fas on the surface of the target cell leading to its death by apoptosis. Hence The cells which have CD - 8 markers on the cell membrane are T-cytotoxic cells.
• So, the correct answer is 'T-cytotoxic cells'.