Stem cells are unlike …show more content…
Embryonic stem cells come from the inner cell mass of the embryo. Embryonic cells are pluripotent, which means they can become all cell types. This type of stem cells can grow very easily (what are the similarities and differences between embryonic and adult stem cells?). Adult stem cells are also referred to as somatic cells. They are multipotent, diploid body cells, which contains two sets of chromosomes, one from each parent. Adult stem cells are rare tissues and are less likely to initiate rejection after transplants. Adult stem cells are limited because of their tissues (what are the similarities and differences between embryonic and adult stem cells?). The three main current sources for embryonic stem cells are cell lines that already exist, spare embryos left over from fertility treatment, and custom-made embryos created by somatic cell nuclear transfer (SCNT) (sources of human embryonic stem cells). There are two most common current sources of adult stem cells. The first is to be used in bone marrow, which is very common. The statistics show that there is 1 out of 10 in every 15,000 that may need adult stem cells for bone marrow transplants. The second is used in repairing and transplanting tissues (sources of human embryonic stem …show more content…
Controlling stem cells is definitely not easy (spinal cord injury zone). Although, embryonic stem cells are easier to grow into unspecialized cells scientists claim that there is still a lot of work needed into making the cells differentiation more reliable. Transplanted cells sometimes can "overgrow" and can lead to more issues some even as major as cancer (spinal cord injury zone). Also, the immune system can reject the transplanted cells. Many people have different opinions when it comes to stem cells. Some of them completely agree and others do not (spinal cord injury zone). When embryos are used for stem cell research some people believe that they are destroying the embryo just for research and believes that it is killing human life. While others believe that it is okay to use the embryos as long as they aren 't just created for research (spinal cord injury