MCAT Question of the Day
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    Q:

    		 Which of the following events is best associated with an autoimmune disease?

    		 

    A

    		 B cells and T cells respond independently to antigens

    B

    		 The acquired immune system is hindered and fails to recognize a subsequent infection by the same antigen.

    C

    		 A molecule belonging to the host is treated like an antigen, which triggers an immune response.

    D

    		 A hereditary defect causing the innate immune system to fail at producing an immune response



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