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.
After being appointed head of the Virus Research Lab at the University of Pittsburgh in 1947, Dr. Jonas Salk devoted himself to finding a way to curb the devastating virus. Less than five years later, he invented a vaccine and decided to test it out.