Question

During delayed-type hypersensitivity lymphokines are released by

• A. T helper cells
• B. T killer cells
• C. T cytotoxic cells
• D. All of the above

Answer 1

The correct option is A T helper cells

Delayed-type hypersensitivity reactions are caused by interaction between helper T cells and antigen presented by Antigen presenting cells along with major histocompatibility complex class II molecules. Hence lymphokines are released by T helper cells that cause the influx of inflammatory cells. Thus the correct answer is option A.