What do they do with stem cells from cord blood?

Depends. Right now they are stored, these cells currenttly can be used for an autologus (self) or allogenetic (to some one else) bone marrow transplant.
Tissue/organs. Is the substrat of the biofactury of the future, preserved stemcells are used by specialized/scientific research centers for tissue/organs biofacturing when the donor needs it. Still is in research/applicable phase.

Related Questions

Why do cord blood stem cells not cause much issue in regards to matching another patient's blood?

Building blocks. Cord blood is filled with a cell that has the ability to transform into various types of blood cells. (hematopoeitic cell). It's basically a cell that's waiting for a command to transform into a functioning unit so it's very flexible. https://en.wikipedia.org/wiki/Cord_blood. Read more...

What's difference between stem cells from adult and cord blood cells in terms of usefulness? I regret for not having my cord cells stored at birth!

A lot. Cord cells are theoretically the ideal stem cells, because they have the potential to develop into any cell in the body. Adult stem cells have all differentiated to some extent, and so are less useful. We all have regrets, but we have to live with them, unfortunately. Read more...
Younger cells. We all have dormant stem cells all all over our bodies. Adult stem cells can be harvested from bone marrow or fat. These are great resources because it comes from your own body. Older, sicker people have less stem cells and these cells are not so healthy. The good news is, you can use cord stem cells from donors because these cells are so immature that they are not rejected by your immune system. Read more...

Is it possible that stem cell created from umbilical cord blood can help muscular dystrophy?

Possibly. Umbilical cord stem cells can turn into muscle cells under test tube conditions, and in animal models of muscular dystrophy (md) have been shown to improve function, increase strength, and reduce the high levels of muscle enzymes seen in md patients. There have also been rare case reports of positive effects in young boys with md. Clinical trials are currently underway in china and india. Read more...