The reason why allergic reactions, tissue rejection reactions, and autoimmunity reaction arise from immune mechanism. Introduction: The immune system provides defence against invading pathogens. It is a complex network of cells, organs, and proteins that provide immunity. The immunity can be differentiated into innate and adaptive immunity. The innate immunity provides non-specific defence against the invading pathogens, while adaptive immunity provides specific defence against pathogens. However, some disorders in the immune system may turn against the own body cells.

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Chapter 14.8, Problem 13L

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To explain: The reason why allergic reactions, tissue rejection reactions, and autoimmunity reaction arise from immune mechanism.

Introduction: The immune system provides defence against invading pathogens. It is a complex network of cells, organs, and proteins that provide immunity. The immunity can be differentiated into innate and adaptive immunity. The innate immunity provides non-specific defence against the invading pathogens, while adaptive immunity provides specific defence against pathogens. However, some disorders in the immune system may turn against the own body cells.

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