Immunization is based on the
A)body's ability to remember an encounter with a specific antigen.
B)body's ability to tell a harmful pathogen from a harmless one.
C)introduction of a pathogen into the body to stimulate antigens.
D)introduction of helper T cells into the body.

Question

Quizplus · Accepted Answer

Immunization is based on the body's ability to remember an encounter with a specific antigen. When a person is vaccinated, a small and safe amount of a specific antigen is introduced into the body, which triggers an immune response. The immune system then recognizes and remembers the antigen, so if the person is exposed to the same pathogen in the future, their immune system can respond quickly and effectively to eliminate it. This is why immunization provides long-term protection against specific diseases.

Immunization Is Based on the