Stephen Johnston, scientist and professor at the Biodesign Institute at Arizona State University, has worked for 12 years on a vaccine to prevent canine cancer. Trilly is the the first dog to receive the vaccine in a trial that launched early May. (Photo: Arizona State University)
Stephen Johnston, scientist and professor at the Biodesign Institute at Arizona State University, has worked for 12 years on a vaccine to prevent canine cancer. Trilly is the the first dog to receive the vaccine in a trial that launched early May. (Photo: Arizona State University)