Stem cells can come from embryonic or adult sources. Embryonic stem cells are more versatile but their use is controversial due to ethical concerns. Adult stem cells are more limited in their abilities but do not pose the same ethical issues. While stem cells show promise for new medical treatments, more research is still needed to overcome obstacles like rejection by the immune system.

1. Stem Cells!

2. What are stem cells?

4. Controversy

5. Embryonic vs. Adult

6. Advantages to Adult

7. Disadvantages to Adult

8. Cures

9. Obstacles

10. Solution

11. Works Cited Pachisa, Mumtaz. associated content. 19 MAR 2009. associated content, Web. 2 Mar 2010. <http://www.associatedcontent.com/article/1579032/stem_cells_the_science_the_benefits.html?cat=5>. Stem Cell Basics: What are adult stem cells? . In Stem Cell Information [World Wide Web site]. Bethesda, MD: National Institutes of Health, U.S. Department of Health and Human Services, 2009 [cited Thursday, March 03, 2010] Available at <http://stemcells.nih.gov/info/basics/basics4> "Stem cells." New York Times 09 Mar 2009: n. pag. Web. 3 Mar 2010. <http://topics.nytimes.com/topics/news/health/diseasesconditionsandhealthtopics/stemcells/index.html>.