irector of National Institutes of Health, befor a senate subcommity, Pluripotent stem cells offer the possibility of a renewable source of replacement cells and tissues to treat a myriad of diseases, conditions, and disabilities including Parkinson's and Alzheimer's diseases, spinal cord injury, stroke, burns, heart disease, diabetes, osteoarthritis and rheumatoid arthritis (Varmus, Statement on Research Using Stem Cells, December 2, 1998). Pluripotent refers to the
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