11. Adaptive immunity is based upon
(A) traits common to groups of pathogens
(B) antigen-specific recognition;
(C) maternal provision of antibodies to offspring
(D) plants being exposed to new pathogens
(E) having exhausted all options for innate immunity responses
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統計: A(0), B(1), C(1), D(0), E(0) #3828126
統計: A(0), B(1), C(1), D(0), E(0) #3828126