Vaccination increases the number of ________.
A) different receptors that recognize a pathogen
B) lymphocytes with receptors that can bind to the pathogen
C) epitopes that the immune system can recognize
D) macrophages specific for a pathogen
E) major histocompatibility (MHC) molecules that can present an antigen

Question

Quizplus · Accepted Answer

Vaccination works by introducing a weakened or dead version of a pathogen or specific parts of it (such as proteins or sugars) into the body. This will cause the immune system to produce lymphocytes with receptors that can bind to the pathogen, allowing the body to recognize and combat the pathogen more effectively in the future.

Answer: C
 Each pathogen has specific molecules called epitopes that the immune system can recognize and target. Vaccination can increase the number of these epitopes that the immune system can recognize by introducing specific parts of the pathogen into the body, allowing the immune system to develop a stronger and more specific response to the pathogen.

Answer: E
 Vaccination can also increase the number of major histocompatibility (MHC) molecules that can present an antigen. MHC molecules are found on the surface of cells and help to present antigens to the immune system. By introducing specific parts of a pathogen into the body through vaccination, the immune system can be stimulated to produce more MHC molecules that can recognize and present the antigens from the pathogen.

Vaccination Increases the Number of ________