免疫防御（immunologic defence）是指免疫系统通过正常免疫应答，阻止和清除入侵病原体及其毒素的功能，即抗感染免疫作用。
免疫防御(immunologic defence)：是机体排斥外来抗原性异物的一种免疫保护功能。该功能正常时，机体可抵御病原微生物及其毒性产物的感染和损害，即抗感染免疫；...
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天然的第一免疫防御 Nature's First Immune Defense
感染性疾病与免疫防御 Infection and immune defense
先天性免疫防御 innate immune defense
免疫防御强壮剂 immune defense booster
The results indicated Ammonia-N stimulant could produce obvious effect on immune defense function and damage A. woodiana disease- resistance in some degree.
实验表明,氨氮刺激可明显影响无齿蚌的免疫防御机能,并在一定程度导致抗病力下降。
参考来源 - 外界刺激与环境胁迫对背角无齿蚌免疫因子的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
可能是雄性可以利用稀少的类胡萝卜素进行免疫防御和解毒，或者吸引雌性。
It may be that males can use scarce carotenoids either for immune defense and detoxification or for attracting females.
这样的案例表明，即使是通常不致命的疾病，当它们袭击一个免疫防御能力不强的社区时，也会造成毁灭性的后果。
Cases such as this demonstrate that even diseases that are not normally fatal can have devastating consequences when they strike an immunologically defenseless community.
从应答方面来讲，动物的免疫防御系统又划分为先天性免疫细胞及分子和适应性免疫细胞及分子。
Animal immunizing and defending system is also divided into geneogenous immunizing cells and molecules & adaptive immunizing cells and molecules on response.
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