It’s being billed as a scientific breakthrough. Xue-Jun Li says, “I was very exciting, the first time, after I really got the very, very high population of the cells, what I want.”

Since 2001, Li’s been a part of a team of researchers, led by University of Wisconsin instructor, Dr. Suââ?¬â??Chun Zhang, which has been trying to develop a method to guide stem cell development. They’ve succeeded.