Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Autoimmune Hepatitis ?
    ### Response:
    Autoimmune hepatitis is a chronicor long lastingdisease in which the body's immune system attacks the normal components, or cells, of the liver and causes inflammation and liver damage. The immune system normally protects people from infection by identifying and destroying bacteria, viruses, and other potentially harmful foreign substances.
    