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Growing organs from stem cells. Surgeon Paolo Macchiarini, Professor of Regenerative Surgery at Karolinska Institutet is famous for being the first man to grow (and transplant) a fully working human organ using adult stem cells. That was back in 2008 and since then five similar operations have been carried out.
Stem cellsâ value to researchers is that they can be induced into becoming specific tissue or organ cells. The cloning procedure works by combining a patient's body cell with an unfertilized egg cell from a donor. The patient's skin cell is inserted into the outer membrane of the egg cell and chemically induced to begin developing into a blastocyst. In the blastocyst, embryonic cells divide, producing a mass of stem cells. The stem cells can be induced to differentiate into different types of cells as needed (heart, nerve, muscle, etc.). These cells are genetically identical to the patient's own cells (that is, they are cloned).