All of the following are true of hypersensitivity EXCEPT
A) it occurs when an individual is exposed to an allergen for the first time.
B) it is synonymous with "allergy."
C) it requires previous exposure to an antigen.
D) it occurs in the presence of an antigen.
E) it is due to an altered immune response.

Question

Quizplus · Accepted Answer

Hypersensitivity is a heightened or exaggerated immune response to an antigen that has been previously encountered, not during the first exposure.

All of the Following Are True of Hypersensitivity EXCEPT