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
About This Quote

From the perspective of the immune system, cancer cells are not self. A cancer cell that is not self-reactive is very different from a foreign cell that will turn into an attack mode and attack the body. The immune system will also ignore a cancer cell if it is under the control of a tumor suppressor gene. If a tumor suppressor gene is inactive, then the immune system will sense that cell as foreign and attack it.

Source: Brightsided: How The Relentless Promotion Of Positive Thinking Has Undermined America

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