What is the use of storing stem cells? How the Stem cell storage helps?

Umbilical cord is the connection between child and mother when the child is in fetus. Child is separated from mother by cutting this umbilical cord at the time of birth. Then blood from the cord present towards mother is collected. This blood is full of stem cells. These are stored in ‘cord blood stem cells bank’. With these stem cells it is possible to treat 75 different types of diseases which include leukemia, heart diseases, genetical diseases, diabetes, kidney problems, etc. These stem cells are useful to the child and also to the mother and siblings. But stem cell treatment is expensive.