“Viral vectors” are ______ .
(A) ways with which viruses genomes are changed
(B) viruses used for carrying genetic material into cells
(C) the paths through which viruses move
(D) immune reactions triggered by viral infection
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統計: A(27), B(96), C(40), D(28), E(0) #150861
統計: A(27), B(96), C(40), D(28), E(0) #150861