" As a recent editorial in the Journal of Clinical Oncology put it: "What we must first remember is that the immune system is designed to detect foreign invaders, and avoid out own cells. With few exceptions, the immune system does not appear to recognize cancers within an individual as foreign, because they are actually part of the self. "

― Barbara Ehrenreich , Bright-Sided: How the Relentless Promotion of Positive Thinking Has Undermined America