To look at 4-year-old Michael Wilson as he runs and plays and smiles, you would never know he was diagnosed with a terminal illness. That's because a cord blood transplant stopped it in its track, saving his life.
"My son lost his eyesight. My son lost his hearing. He can't hear me. He can't see me," his mother, Tammy Wilson, told ABC News. "He has seizures on a daily basis, on average six, sometimes 12 seizures a day."