It is well known that the etiology of type 1 diabetes remains unknown. The best studied factor is the autoimmune: T lymphocytes attack the beta cells in the pancreatic islets. As a trigger, there is usually a history of a previous viral infection (difficult to determine). Regarding this, the question arises to me about the following: After the original beta cells were destroyed, the T lymphocytes could develop a new attack on the transplanted cells? It will be interesting to know the results in the medium and long term. Hmmmmm... Interesting.