Original sentence: However, there was no control subjects, which means that all of the processes could have completely or partially natural.It is too early to say whether the results will be positive or negative in the long run.Secondly, no theory for the mechanism of cure shas ben promoted.Voltarelli and colleagues killed the immune cells, allowing the pancreas to secrete insulin once more
Edited sentence: For one,  there was no control subject, which means that all of the processes could have completely or partially  natural.However, scientists warn against over exaggerating our hopes.Nonetheless, it is all too early to say whether the results will be positive or negetive in the long run.Secondly, we do not know how the stem cells are curing: by stunting pancrea cell destruction, or promoting pancrea cell regrowth.The procedure that was used in the University of São Paulo can be called one of the most revolutionary medical procedures up to date.Voltarelli and his colleagues killed the immune cells, allowing the pancreas to secrete insulin once more