Now, type one diabetes. So people with type one diabetes basically depend on insulin that is manufactured in the lab. And that's exactly why type one diabetes is also known as insulin dependent diabetes, because these individuals depend on regular doses of insulin. Now, why would our beta cells actually be destroyed? Well, one reason is because of an autoimmune disease. So basically, in some individuals, and this is genetic in some individuals, our own immune cells, immune system cells, actually destroy our beta cells.