How the body builds resistance to certain pathogens when it comes in contact with the pathogen itself.
Explanation:
Our body develops resistance to pathogens. This is when we allow our bodies to come into contact with certain types of pathogens and our immune systems respond by producing antibodies and the body's defense cells. An example of this can be seen in influenza vaccines. These vaccines bring our body into contact with an inactivated influenza virus molecule, so our immune system will try to fight off this molecule and allow us to become resistant to the pathogen.
"Vaccination works to stimulate a specific immune response that will create memory B and T cells specific to a certain pathogen. These memory cells persist in the body and can lead to a quick and effective response should the body encounter the pathogen again."
