Compounds present in the body normally restricted in certain areas (and thus hidden from the immune system) are released into the bloodstream. For example, a blow to the eye can make the liquid in the eyeball released into the bloodstream. The fluid stimulates the immune system to recognize the eye as a foreign object and attack it. Normal compounds in the body change, for example, by viruses, drugs, sunlight, or radiation. Changing compound materials may seem alien to the immune system. For example, a virus can infect and thus alter cells in the body. Cells infected by the virus stimulate the immune system to attack it. Preventing autoimmune diseases rampant like diabetes, for example, you can use http://biz.kompas.com/read/2017/05/29/090653328/obat.herbal.pendampingpengobatan.diabetes.
Foreign compounds that resemble natural body compounds may enter the body. An immune system with less caution can make body compounds similar to the foreign material as a target. For example, the bacteria that cause sore throats have some antigens similar to human heart cells. Rarely occurs, the immune system can attack the heart of the person after a sore throat (this reaction is part of the ruminal demand). Cells that control the production of antibodies such as B lymphocytes (one of the white blood cells) may be damaged and produce abnormal antibodies that attack several body cells.