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The nervous system is responsible for doing this.
Receptors.
inside out changes inside out changes inside out changes inside out changes
It means that they tested for the vaccine in your body and it tested positive aka, vaccine is already inside you. No need for another
vaccination
Vaccination
Biochemical changes are changes that happen inside of the body of an animal or plant. These examples include puberty for adolescents for example.
they help you because it turns the food you eat into substances your body can use.
When you are vaccinated, your body builds up an immune response to the vaccination. This protects you from the disease you were vaccinated for. There is some controversy about vaccination.
Vaccines contain an inert or inactive version of a virus. When the body detects it, it develops anti-bodies to the inert virus in the vaccine. So when the real virus shows up, the body recognizes it, and can easily defeat it.
Active vaccination produces antibodies against the particular organism. These antibodies kill the invading pathogen and protect the body against the disease.