CRISPR is a new molecule found in Prokaryotic cells that allow these cells to defend against viruses and other harmful organisms that can enter into these kinds of cells. The first scientists to discover CRISPR-Cas9 are from the University of Cambridge, Massachusetts. What this molecules main job in cells is to find the genetic DNA that does not match the hosts and eradicate it. Scientists say that if we can utilize this tool correctly than we can eventually use CRISPR to genetically modify humans to be resistant to diseases like HIV. Later on scientists are even trying to stop the aging process by hundreds of years. Below are some pictures displaying the molecule in action. Below are some pictures demonstration the molecule and the process it uses to eradicate the foreign substance
Before you just automatically down vote this article I will leave my sources from the Original video I got the idea from to write this article.
Main Article: http://www.nature.com/news/crispr-gene-editing-is-just-the-beginning-1.19510