human
How does the swine flu vaccine work?
assistant
The swine flu vaccine is made up of three different components. One component is a killed virus that was grown in eggs, another is an inactivated virus, and the third is a recombinant protein made from the genetic material of the virus. These components are mixed together and then injected into the body. The immune system responds to these antigens by producing antibodies against them, which can then fight off the virus if it ever enters the body.