The first, and I think in the long run the one that will give us the biggest dividend, but it's not thought of that way just yet, is to think about those stem cells that are already in your brain, and I've told you that.
La primera, i crec que a llarg termini és la que ens donarà els  dividends més grans, però ara per ara encara no es pensa  d'aquesta manera, és pensar en aquelles cèl·lules  mare que ja estan al teu cervell, i ja us ho he dit.