Dogs can be vaccinated against the rabies virus. when a vaccinated dog is exposed to the rabies virus, the dog will most likely
1) develop a mutation that will make the dog sick and the dog will be unable to recover
2) have a damaged immune system and will not be able to be protected
3) have an immune response and will be able to fight the microbes
4) develop a response that will allow the immune system to attack some of the body's own cells