A primer on stem cell research.

Stem cell research holds promise for new treatments for diseases such as Parkinson's and injuries such as those to the spinal cord. Yet stem cell research remains steeped in controversy. This article defines key terms and outlines some of the basic concepts related to stem cell research in order to clarify concepts and correct misconceptions. It also briefly discusses what scientists, particularly those at the University of Minnesota, are learning about adult and embryonic stem cells and their potential for research and treatment.