A 5-year-old female takes a hike through the woods during a school field trip. Upon returning home, she hugs her father, and he later develops poison ivy. Which of the following immune reactions is he experiencing?

a. IgE-mediated

b. Tissue specific

c. Immune complex

d. Cell-mediated

The correct answer is d. cell-mediated

Explanation:

The five year old female when comes from hiking her clothes were having ivy poison comes from leaves of ivy poison plant which she encountered during her trip. His father receives ivy poison from her daughter during hugging which generated a cell mediate response in his body.

This immune response is T-cell mediated and also called delayed hypersensitivity in which T-cell attacks the own body cell by thinking them a foreign molecule. In this case T-cells attacks complex of poison and cell protein which will produce an allergic reaction in his body.