I participated in this Study in Dec, 2009. I have followed their progress very closely. The Study is scheduled to end in April of 2011. As many as 750 type 1 diabetics will have participated. All participants have had type 1 for at least 50 years, and have no serious complications. It is hoped that the factor(s) will be found that have enabled these individuals to have long lives without serious problems.
Here is the most recent report from the Joslin Diabetes Center, in Boston:
http://www.joslin.org/news/ultimate_diabetes_survivors_the_joslin_50-year_medalists_give_clues_to_cures.html
That was really interesting. Thanks for posting it.