Stem cells were found in all multicellular organisms. These stem cells are two different kind, they are embryonic stem cells and adult stem cells. The characteristic of stem cells is that they renew the white blood cells. They are renewed because they have the ability to go through many cycles of cell division.

While going through this process of cell division, they retain their undifferentiated state. The stem cells produce different types of cells. They are therefore recommended to be stored for future use. These stem cells from the cord blood can be used for various diseases treatment. Like bone marrow, umbilical cord blood is also an important source of stem cells.

The collection of stem cells from umbilical cord blood is simple, safe and painless. Within ten minutes after birth, blood is taken from the umbilical cord. Once the blood is collected and tested that proves everything is in order, more chemical may be added to preserve the blood. The temperature at which the cord blood is taken is very important. Cord blood can be used for the donor or the donor's family. In this case, blood is stored in a private bank. If someone wants to donate cord blood, and then held in the public storage.

Stem cells from umbilical cord blood offers the opportunity to repair and replace damaged tissue, vascular endothelial cells, which contains the inner wall of blood vessels forms. There are three types of stem cells, they are hematopoietic stem cells, mesenchymal stem cells and endothelial progenitor cells. The main area in which the stem cells to help people is their ability to regenerate blood cells.

Few groups have raised ethical controversy of using stem cells from cord blood. The controversy is because of the destruction of human embryos. In addition to all the debates and controversies of stem cell cord blood proved to change the face of the science of man.