ı haven't written for a long time because ı was on holiday.ı want to give information about pancreas b cells and stem cells.(you know ı am interest in stem cell and ı want my workings to be releated with it.) diabettus mellitus type 1 is widespread dissease in the world.it is an outcome of degenerating b cells in pancreas with auto immun attack.there are many methods applied for treating.one of them is langerhans islets transplantation from cadavra's donor but it has not conclusive solution.ıt provides solution for a period longer than three years indepence of insulin.at the present time the stem cell treatment is promising.there are three ways.one of them is using embryonic stem cell or human stem cell for obtaining insulin secreting cells,the other is reprogramming somatic cells to convert b cells and the other is replication of b cells in vivo or in vitro conditions.