But for the few ros molecules that are released in the process or for instance, when we form the peroxide in complex four, if the complex four accidentally releases the peroxide, we do have certain methods that our cells use to actually help us remove these harmful molecules from our body. And these methods includes using these special protective enzymes to find, to locate these ros molecules and to basically convert the ros molecules into something that are safer. So let's discuss two very important types of protective enzymes used by our human cells and many other eukaryotic cells. So we have an enzyme known as superoxide, this mutates, and an enzyme known as catalase. In addition, we also have many different types of vitamins used by our body that actually allows us to control the amount of these reactive oxygen species that we find inside our cells. So let's begin by focusing on super oxide, this mutate.