Figure 1 Autoimmunity: when the immune system attacks the body’s own cells. Under normal circumstances, adaptive immune cells can recognise antigens on the surface of invading pathogens (such as bacteria) as foreign and attack these pathogens. In autoimmune disease, adaptive immune cells mistake the antigens on the surface of our body’s cells as foreign and attack them
AQA Cell recognition and the immune system
OCR A Communicable diseases, disease prevention and the immune system
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