Thirty months after President Bush banned federal funding for research
on embryonic stem cells created after August 9, 2001, scientists and advocates
are sidestepping the restrictions with millions of private and state dollars.
At the same time, new research on adult stem cells—touted by embryonic
cell opponents as a viable alternative for development of advanced tissue-replacement
technologies—suggests they are less flexible than once imagined .
Vastag B. Private Efforts Pick Up Stem Cell Slack. JAMA. 2004;291(17):2059-2060. doi:10.1001/jama.291.17.2059