Zinc assists the body's natural immune system and is an important nutritional antioxidant.

锌有助于人体的自然免疫系统，是一个重要的营养抗氧化剂。

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The main inspirations from natural immune system include non self recognition mechanism, immune evolution mechanism, etc.

系统中蕴涵的生物免疫机制主要有非我识别机制、免疫进化机制等。

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Because of its important role in our body and its outstanding properties, Natural immune system has allured a lot of attention.

免疫系统由于其在人体中的重要作用及其优良的功能特性，引起了人们强烈的研究兴趣。

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Autoimmune diseases affect the immune system C the body's natural defenses for fighting disease.

VOA: special.2009.04.14

Autoimmune diseases affect the immune system, the body's natural defenses for fighting disease.

VOA: special.2010.06.15

Those diseases affect the immune system the body's natural resistance to disease.

VOA: special.2009.11.24

Alpha-interferons are natural immune system chemicals, some of which have been developed as hepatitis drugs.

BBC: Human gene patents defended

Another immune-boosting therapy against cancer, the natural immune system protein interleukin-2, has been limited by severe side effects.

FORBES: Health Care

Existing drug regimens are based on various genetically engineered versions of the natural immune system protein alpha interferon combined with a second chemical, ribavirin.

FORBES: Magazine Article