(From the New Scientist). A California researcher has demonstrated that adult stem cells obtained from body fat can grow new tissue as well as bone marrow stem cells, at least in mice. This is the first time that fat stem cells have been demonstrated to heal an injury. In this case they were used to grow new bone, although other studies have indicated that these adult stem cells could be used to grow other forms of tissue as well. Fat is considerably easier to harvest than bone marrow, raising the possibility of "therapeutic liposuction" as a precursor to regenerative therapies. Difficult bone marrow transplants may be a thing of the past in years to come.