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This is Scientific Americans' 60-second science.

I'm Steve Mersski. Got a minute?

Voice is generated by a complex and beautiful biological system,

and this is a system that allows all of us to communicate messages, concepts, and emotions.

Nathan Wellam of the University of Wisconsin School of Medicine and Public Health.

But a person can lose his or her voice because of severe damage to the vocal cords, also called the vocal fold mucosa.

In these situations where the vocal fold mucosa is severely damaged or missing, and with present technology unfixable, the best

option may be to simply replace it.

Wellam spoke at a telephone press conference on November 17th, in conjunction with the

announcement that he and colleagues had succeeded in generating bioengineered vocal fold

mucosa that were capable of producing sound, a first step toward

implants one day. Their study is in the journal Science. The research team started with vocal

cord tissue from a cadaver and from four patients who had had their voice boxes removed. They took cells

from those tissue samples and successfully grew them on a three-dimensional

scaffold to produce new vocal cords. So how do the lab grown vocal cords actually sound?

We did some functional testing where a larynx is mounted on a lab bench, put on a fake windpipe,

...