Just found this couple days ago.
http://www.anthonynolan.org/news/2015/07/01/new-use-cord-blood-coul...
“As well as helping to treat blood cancer patients suffering with the effects of GvHD, these new findings could eventually lead to treatments that could eradicate symptoms of eczema, rheumatoid arthritis and even alopecia areata without causing any major side effects."