Answer: Antigens.
Vaccinations are dead cells of the disease. When it enters the body, the body 'fights' the disease without hurting the body. The body then builds up a defense system against this disease and is ready if and when the disease really happens.
body immune system
Immune system
immunity is when your body fights of infectious disease
white bloods cells fights foreign substances in a human body
white blood cell defends the body against disease.
our body has blood which contains w b c which removes germs and fights against the germs
we have white blood cells in our blood with fights off viruses and we then become immune to it, if a new pathogens enters the body then the body needs time to fight it off the new virus
Antiseptics don't change the way your body fights disease. They only help your body do so by decreasing the number of disease-causing microbes on your skin & in your environment.
I think you may mean lymph the fluid in which the white blood cells that fight disease are carried.
Active vaccination produces antibodies against the particular organism. These antibodies kill the invading pathogen and protect the body against the disease.
Immunity