Cancer is a disease that touches almost everyone to some degree, even dogs. In fact, some breeds have cancer rates as high as 40%. It's something Stephen Johnston is trying to prevent. He's a Professor at Arizona State University who's been given a grant of more than $6 million to test a possible vaccine for all types of canine cancer. And if it works, it could one day be used on humans. Dr. Johnston spoke to KNAU's Justin Regan recently about the vaccine trial.