It is basically where when a baby is born there is an abundance of stem cells in its system, which are un-specialized neutral cells that can be preserved and renewed over time... It is extracted from the baby usually right after it is born... And those stem cells can produce more different cells of specialized types (It can be turned into hair cells, blood cells, etc.) when needed... It is typically used for treating major health issues (surgeries, transplants, treat cancer, etc...) that may come later on life without any effects as you are replacing your own cells only...Once a baby is born, parents are given the choice of applying for it which is obviously expensive but a very protective shield for the child's entire life as nothing would be as risky to treat... Also, it won't always cover every health issue or just cure it, but it would definitely make the treatment more effective... Some can actually be cured completely with stem cells, so it has a great potential...