I'm on a course at the moment <a href=" http://www.epser.com/buy-cheap-alli.pdf#nicer ">buy alli weight loss pills</a> Stem cells can be taken from early embryos or be created from ordinary skin cells by injecting them with four genetic factors that re-programme the adult cells back to their embryonic state. These stem cells are called induced pluriopotent stem (iPS) cells and their discovery was awarded a Nobel prize in 2012.