BOSTON (WBZ) ― There's been a lot of controversy over the use of embryonic stem cells in recent years, but adult stem cells, which few people oppose using, are already giving some patients a new lease on life. Donald Reid is hoping adult stem cells will give him more time. "There's not many options left for me." The 57-year-old has clogged arteries and heart disease so bad; he's not a candidate for surgery. Instead, he's joined an experimental study that involves a special machine. It's taking his blood and pulling out stem cells. We're not talking about stem cells from...