MCAT Question of the Day
    •

    Q:

    		 The innate immune system is an ancient defense mechanism found in many organisms. One characteristic of an innate immune system compared with the adaptive immune system is the inability to establish immunological memory. Which of the following incidents will establish immunological memory?
    		 

    A

    		 viral antigen exposure

    B

    		 infection with worm parasites in the blood

    C

    		 inflammation from cells damaged by a clean cut

    D

    		 endotoxin from lipopolysaccharide of Gram-negative bacteria such as E. coli



    Immune System |
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