16. Which statement is true about innate immunity?
(A) Innate immunity serves as the body's first line of defense against pathogens.
(B) An animal's prior exposure to a pathogen influences an innate immune response's strength.
(C) Innate immunity has not yet been discovered in plants.
(D) All of the above are true.
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統計: A(10), B(3), C(1), D(3), E(0) #3425985
統計: A(10), B(3), C(1), D(3), E(0) #3425985