Fat cells into stem cells

After performing a liposuction surgery in August 2008, Michael Longaker left the OR with a quart of fat from a patient. But instead of dumping it in a biohazard bin, the Stanford University surgeon took it to his lab. Several weeks later, he and cardiologist Joseph Wu became the first to turn the castaway fat into stem cells.
   In 2007, an international team of scientists showed that, given the right genetic signals, skin cells could transform into pluripotent stem cells--cells that have the ability to become almost any other type of cell. A year later, Longaker and Wu began considering what other cells could make the same transition.  From start to finish, transforming fat cells took just 20 days, compared with eight weeks for skin cells from a patient, and yielded 20 times as many stem cells.
   Collecting cells directly from the patient, while trimming love handles, would eliminate any chance of immune rejection.
  So who needs the embryonic stem cells???