This week, Sound Medicine presents a full hour of conversations and stories about cancer. We hear from Larry Einhorn, the doctor who discovered the cure for testicular cancer, and his first patient. We visit the world's only repository of healthy breast tissue, and we learn how researchers are "training" the body's immune system to fight cancer. Plus, why treatment for a rare cancer can be so frustrating and lonely- even with access to the latest technologies and therapies: the latest conversation betweenbioethicist Eric Meslin and pharmacogeneticist David Flockhart, who is chronicling his own experiences with brain cancer.