SCIENCE STUDIO: Vaccines & Immunotherapy

Keith & Russ talk with Dr. Qizhi Cathy Yao, Professor in the Michael E. DeBakey Department of Surgery, Baylor School of Medicine.  Yao talks about the differences between vaccines and immunotherapy, both of which are used to fight disease, but at different stages of the disease.  She talks about the challenges of developing a vaccine for HIV, and her hopes of developing a way to fight and cure pancreatic cancer.  Aired April 21, 2013.