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Explain the role of the immune system in defending the body against infections.

Explain the role of the immune system in defending the body against infections.

发布时间:2025-08-03 03:33:55
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答案:The immune system plays a crucial role in defending the body against infections by recognizing and eliminating harmful pathogens such as bacteria, viruses, and other foreign substances. It consists of various cells, tissues, and organs that work together to protect the body. When a pathogen enters the body, the immune system responds by activating white blood cells and producing antibodies that target and neutralize the invaders. This response helps to prevent the spread of infection and promotes healing and recovery.
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