Stem cells are undifferentiated (unspecialized) cells in our body which have the capacity to undergo mitosis and differentiate into specialized cell types and can redivide to produce more stem cells. Stem cells may be obtained from an embryo, the umbilical cord and bone marrow in adults.
Medical research shows that stem cell therapy can replace tissues damaged due to human disease. A number of adult stem cell therapies already exist, such as bone marrow transplant to treat blood cancer. Stem cells have potential uses as:
To replace damaged tissues
To study human development
To test new drugs
To devise methods of gene therapy