When the body responds to a relatively harmless substance as a dangerous pathogen and mounts an immune response,this response is called
A)passive immunity.
B)active immunity.
C)pathogenesis.
D)an allergic reaction.

Question

Quizplus · Accepted Answer

When the body responds to a relatively harmless substance as a dangerous pathogen, and mounts an immune response, it is called an allergic reaction. An allergic reaction is an overreaction of the immune system to an allergen, which is usually a harmless substance like pollen, pet dander or certain foods. The immune system mistakenly identifies these substances as harmful and produces an immune response to neutralize them. This immune response can cause a range of symptoms, from mild itching and sneezing to life-threatening anaphylaxis.

When the Body Responds to a Relatively Harmless Substance as a Dangerous