Читать книгу The Healthy Thyroid: What you can do to prevent and alleviate thyroid imbalance - Patsy Westcott - Страница 35

Under normal circumstances, the immune system does not turn against itself because our own cells are coded to allow our T cells and B cells to recognize them as ‘self and refrain from attacking them. Scientists still do not know exactly why this normal recognition process fails. One theory is that, in some cases, a foreign antigen – say, a protein on a virus – escapes the immune system’s surveillance by disguising itself as one the body’s own cells. As the immune system cannot distinguish this disguised protein from its own tissue, it allows the invader access to the cells.