likewin, identical twins b u might get 30r 40 of them. and th's noways cled a clone. that wasn't the purposef the experiment as a matter of fact, it didn't have any very particular imrtance as such. dot think it does still. >> charlie: then comes you. >> y. >> charlie: tl me what yo do. >> okay. so w sueeded in combining skin cells ba to stem cells. >> charlie: you take somebody skin yells. >> y. >> charlie: an you ca recreate the kin of original stem cells that created the tissue which created theorgan which created e person. >> yes. all stemells are very similar to so-called bryonic stem lls. they can proliferate ridly and ke any kinds of cl in the human body. so they are very very usel. however, we have to use human embryo to identi the cells so many people are ainst e usage o es lls, embryonic stem cells. so we are worki at big programming morethan 40 years ago, he showed that es ces and skin cls, althoughthey are different, they ok different, their function are totally fferent, but h showed tt skin cells and es cells hav exactly the same grouping for cell the gro