Human stem cell treatments are only just emerging in clinical trials. but man's 'best friend' is already benefitting from pain relief and important treatments that are commercialized. And this work in dogs and cats could one day benefit human patients. Dr. Robert Harman, CEO and founder of Vet-Stem, tells the Chicago Tribune's Bruce Japsen about the latest efforts by a stem cell therapy developer to use fat cells for treatments, a therapy gaining momentum in pets and soon to be moving through clinical trials for humans.