Yes, from only one cell, they grew the first organ\'s cells in a kinda small dish (those of bacteries) and then, when the organ became to take shape in size, they introduced the experiment in a small transparent box in which the heart grew perfectly till complete a full-functional heart. I don\'t know what the hell they\'ve done with it, but in the beginning of the research, it was supposed to be implanted into an american cityzen.