ccess of the immune system in distinguishing foreign substances.
[B] the normal and abnormal activities of the immune system in the body.
[C] the unfavorable effects of the immune system on organ transplantation.
[D] the essential duties of the immune system in guarding the body.
核心词汇
intricacy n. 错综复杂的事物;纷繁难懂之处
dynamic a. 动态的,有动力的,有力的
back and forth来回地,反复地
hive n. 蜂房,蜂箱
organism n. 生物体,有机体
molecule n.分子
tissue n. (动、植物的)组织;薄的纱织品
antigen n. 抗原
epitome n. 摘要,缩影,化身
microbe n. 微生物,细菌
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