Maybe there's substance to the theory of constant beta cell regeneration/immune system reaction? Might explain why even long term diabetics occasionally have totally unexplained hypos/hypers despite all best and technological efforts to maintain good numbers.
The whole stem cell/immune system area is fascinating. I read last year of organ transplants where at the same time as receiving a new kidney/whatever, the patient also had new bone marrow installed. All carefully timed and sequenced of course, but the new immune system that developed post-op was a hybrid of old and new, and months later said patients still did not need immuno-suppressants. Very exciting stuff.