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

Question

Quizplus · Accepted Answer

Immunization is based on the body's ability to remember an encounter with a specific antigen. This memory is created by the production of specific antibodies and the development of memory B and T cells that can quickly respond to a secondary exposure to the same antigen, protecting the body from illness or disease. Vaccines introduce a harmless form of the antigen, or a weakened or dead pathogen, to stimulate the body's immune response and create immunity.

Immunization Is Based on the