An allergic response begins with exposure to a(n)
A) antigen.
B) antibody.
C) toxin.
D) pathogen.

Question

Quizplus · Accepted Answer

An allergic response is caused by exposure to an antigen, which is a substance that triggers an immune response in individuals who are sensitive or allergic to it. Antigens can include things like pollen, pet dander, certain foods, or medications. When an antigen enters the body, the immune system can produce an excessive response, leading to allergy symptoms. Antibodies, toxins, and pathogens can also cause immune responses, but they may not necessarily lead to allergic reactions.

An Allergic Response Begins with Exposure to A(n)