To do that with DNA, we need to tell the DNA what to replicate, and then give it the means to do so. We do this by using enzymes and primers. Primers are a subject for another time, but they are responsible for telling the polymerase where to do its work.
Polio was nearly eradicated when society decided to mass produce and use a vaccine created by Jonas Salk. Polio was a big issue but they managed to cure it with a vaccine. Comments.
While most scientists believed that effective vaccines could only be developed with live viruses, Salk developed a âkilled-virusâ vaccine by growing samples of the virus and then deactivating them by adding formaldehyde so that they could no longer reproduce.