There are TED Talks about it. I won't talk much longer, but each person in this room, including myself, has 100 trillion of these micromachines in their body, so that we can enjoy well-being.
Hay conferencias de TED sobre esto, y no me voy a alargar, pero cada uno en esta sala, yo incluido, tenemos 100 trillones de estas  micromáquinas en nuestro cuerpo, para que lo aprecien.