The ability to make many versions of, you kow, from stem cells of our organs. I think we need to distinguish between the use of those tools for research purposes and the use of thosetools for therapeutic purposes. It's actually quite remarkable to see them. And you can kind of see the little brains in the dish, their te little brains ind the dish. O instosnon you mention that 've a family member who is the same age as meor approximately so, who is a beneficiaryand who has sistic fibrosis - it hits close to home....