text: More than 4 million people around the world them take "Humulin" a genetically-engineered human insulin product that is grown up on huge vats of bacteria.  Without this product, many people would not be able to use insulin produced by animals. I am listing a reference with more information about it, in case you are interested.\nAlso, there has n=been some recent talk about "gene therapy" to correct Type II Diabetes.