is it a dream an organ or a pice of human body can be generated from his own blood.nearly scientific experiments support this dream.a six day old embryo can be generated from blood cells.when it is compared with other models(embriyonic stem cells,skin or hear derivered stem cells and virus deppended stem cells).possibily while you are reading this post you can ask how can a cell turn back on its one step or more before its state.ıt is like getting time to back.but it is possible and ıt appears that is reliable method than others.ıt is virus-free way to handle induced pluripotent stem cells(ips).instead of viruses plasmids are used.plasmids are cause of reverting cells to a more primitive stem cells.thus it is prevented viruses' potential impact which mutate genes or initate transforming cells' cancer