A cell potential to produce new cell and regenerate a tissue over the lifetime is called stem cells are found in multicellular organisms and have a variety significant medical applications. They are characterised by the ability to renew themselves through mitosis and regenerate various specialized cell types. In addition, in many tissues, they serve as a sort of internal repair system. When a stem cell divides, each new cell has a potential either to remain as a stem cell or to become another type of cell with a more specialized function, such as muscle cell, red blood cell or a brain cell.

Two broad type of mammalian stem cells are embryonic stem cells that are isolated from the inner cell mass of blastocyst and adult stem cells that are found in adult tissues. Stem cells are extracted from an embryo, amniotic fluid, umbilical cord blood bone marrow and peripheral blood. One of the…