A scientist is pictured on August 27, 2010 working on stem cells at a US university. Researchers in Japan have moved one step closer to clinical trials using adult stem cells in a therapy they hope ... more 

A scientist is pictured on August 27, 2010 working on stem cells at a US university. Researchers in Japan have moved one step closer to clinical trials using adult stem cells in a therapy they hope will prove a cure for common sight problems, an official said Thursday less