Scientists use a mesh material as a scaffold to seed bladder cells as they grow. After three to six weeks, the cells are transplanted inside the child's urethra, where they eventually replace the damaged tissue.
Wake Forest Institute for Regenerative Medicine
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This young patient from India received his cornea transplant in 2009, when he was 10. Here he is shown before (above) and after (below) the transplant, which he received at the LV Prasad Eye Institute (LVPEI), SightLife's partner center in Hyderabad, India.
Courtesy of LVPEI
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A man gets a checkup from Dr. Olveen Carrasquillo at the University of Miami's Miller School of Medicine in January.
Joe Raedle/Getty Images
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Raj Rajaratnam, the billionaire founder of the Galleon Group, a major hedge fund, leaves Manhattan federal court in New York in February.
Louis Lanzano/AP
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Usher (left) and Beyonce (right) performed at private concerts funded by the family of Libyan President Moammar Gadhafi. Gadhafi's son Hannibal is at center.
Bryan Bedder (l), Juan Barreto (c), Koichi Kamoshida (r)/Getty Images
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Bryan Bedder (l), Juan Barreto (c), Koichi Kamoshida (r)/Getty Images
An employee counts bundles of Thai bahts at Krung Thai Bank in Bangkok in October. A tidal wave of money is pouring into Asia and driving up regional currencies.
Pornchai Kittiwongsakul/AFP/Getty Images
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A woman dressed in rags is the subject of Tattered and Torn by Alfred Kappes. Oil on canvas, 1886.
Smith College Museum of Art, Northampton, Mass
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