A Second Encounter with an Allergen That Causes a Response

Question

A second encounter with an allergen that causes a response is called the ______ dose.
A) sensitizing
B) provocative
C) allergic
D) hypersensitivity
E) desensitizing

Accepted Answer

The second encounter with an allergen that triggers an immune response is called the provocative dose, as it provokes the reaction. The first exposure is known as the sensitizing dose, where the immune system is initially exposed and sensitized to the allergen.