Stem Cells

• embryonic cells are cells that come from embryos that are 3 - 5 days old. They can be used to regenerate or repair damaged tissue. However there are lots of ethical issues because you are destroying a potential life.
• Adult cells are found in specific microenvironments in the body such as bone marrow. They can create various types of cell but it is difficult to find and purify them, it is also in the early stages of clinical tests to check its safety. But you do get the person's permission.
• therapeutic cloning is the process of creating an embryo that has the same genetic material as the patient. It involves transferring the nucleus of one of the patient's body cells into an egg cell.
• Therapeutic cloning is where stem cells are created using the patient's own DNA meaning there is less chance of rejection.