Therapeutic cloning involves the cloning of embryos for the production of stem cells. Therapeutic cloning extracts the nucleus from the somatic cell then inserted into the egg, from which the nucleus has previously been removed. The egg is now stimulated to divide and soon forms a mass of cells known as a blastocyst. This blastocyst has both an outer and an inner layer of cells and is the inner layer. The cells of the internal cell mass are isolated and then used to create lines of embryonic stem cells, which are infused into the patient where they are ideally integrated into the tissues, conferring structure and function as