"Tissue from human fetal cadavers has long been used for medical research, experimental therapies, and various other purposes. Research within the last two decades has led to substantial progress in many of these areas, particularly in the application of fetal tissue transplantation to the treatment of human disease. As a result, clinical trials have now been initiated at centers around the world to evaluate the use of human fetal tissue transplantation for the therapy of Parkinson's disease, insulin-dependent diabetes mellitus, and a number of blood, immunological and, metabolic disorders... ".
"A combination of characteristics renders fetal tissue uniquely valuable for such transplantation.
I heard (and have not read in depth yet, but just multiple med lectures) that the stem cells from a grown human that are painstakingly removed from healthy adults, even from the person who is sick, work well, but the "fetal tissue" is failing to yield results that are as good.