I do remember reading about it someplace. If I remember it right, it might be the removal of some cells from the donor's pancreas to inject into the recipient's pancreas to get it working, rather than a portion cut from the donor's pancreas? I don't know if it is considered experimental, or how many hospitals try it. I have also read of cases where previous to the kidney transplant they did a bone-marrow transplant as well, to reduce the danger of rejection. Again, I don't know if with experience they have found this worth-while or not. Sorry I don't have more info. You might try posting your question as well at the FaceBook page of Living Donors on Line, as there are more donors who check in there these days.
Fr. Pat