关于体液免疫的叙述中正确的是( ) A.有的抗原可以直接刺激B淋巴

关于体液免疫的叙述中正确的是(  )

A.有的抗原可以直接刺激B淋巴细胞  

B.抗体是由B淋巴细胞分泌的

C.抗体一般可以直接杀死入侵的细胞  

D.记忆B细胞经迅速增殖分化,可以形成大量的效应T细胞

 

答案

A

 

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