How do you refer to this mouse? It's alternately called "The Vacanti Mouse" and "the ear mouse." This interview has been edited for length and clarity. On the 20th anniversary of this noteworthy development, Newsweek spoke with Joseph Vacanti to hear what he has to say about the mouse, looking back two decades later. Throughout the public consciousness, the mouse is still an icon of the power of science. After BBC aired a documentary on tissue engineering, the world saw the bizarre animal: The Vacanti Mouse. They implanted the shape of a human ear in the back of a mouse as part of research to better understand how they could help grow body parts for humans. You might have thought that the mouse was genetically engineered, or deformed, or the result of mad scientists "playing God." Twenty years ago, Harvard surgeons Joseph and his brother Charles Vacanti, along with MIT engineer Bob Langer, experimented with techniques to create human body parts in the lab. You may have seen it in a textbook or on TV: a mouse with a human ear on its back.
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