Why is U.S. federal funding important for stem cell research?
Federal funding for research involving mouse embryonic stem cells and adult stem cells (both mouse and human) is currently available and is not restricted. However, federal funding for research involving human embryonic stem cells is limited to research involving only those cell lines that were approved by the Bush administration in August 2001. In contrast, no restrictions in the type of research that can be performed with private funds are in place. There are several reasons why these limitations are problematic.