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【单选题】
致敏 Tc 细胞的作用特点是 :A.
无抗原特异性
B.
受 MHC II 类分子限制
C.
可通过 ADCC 作用杀伤靶细胞
D.
可通过分泌细胞毒性物质杀伤靶细胞
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举一反三
【单选题】On Friday he told a iadio interviewer that he______ money to buy old bikes. [ ]
A.
run out of
B.
ran out
C.
had run out of
D.
running out
【简答题】探索神经纤维动作电位形成的离子机制，属于哪类研究
【简答题】????C In January 2004, a 20-year-old woman ran a red light while talking on a cell phone. Her car knocked into another car crossing with the green light directly in front of her. The police found the ...
【简答题】In January 2004, a 20-year-old woman ran a red light while talking on a cell phone. Her carknocked into another car crossing with the green light directly in front of her. The police found thedriver n...
【简答题】何谓静息电位和动作电位？简述两者形成的机制。
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