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Abstract
The Clinical research that accomplished during last few years on stem cells, has constituted a revolution in regenerative medicine and cancer therapies by providing the possibility of generating multiple therapeutic useful cell types. These new cells could be used for treating numerous genetic and degenerative disorders including; hematopoietic disorders, heart failure, chronic liver injury, Parkinson’s disease and Alzheimer’s disease ( Mimeault et al., 2007) . Also, many clinical findings raise the possibility for treatment of infertility through the therapeutic use of stem cells ( Yan He Lue et al., 2007) . For the unique properties of stem cells, 2003). they promise to be of universal use in clinical medicine
Is review the promises and challenges of the stem cells issue including their historical, ethical aspects and changes that may result from their using in the treatment.