immune sytem
a complex response system that protects the body from bacteria, viruses, and other foreign substances
The immune system is a complex network of cells, tissues, and organs that work together to protect the body against harmful pathogens such as bacteria, viruses, and other toxins. The immune system is responsible for identifying and destroying these pathogens, as well as recognizing and attacking foreign substances and unhealthy cells within the body.
There are two main types of immune responses: innate and adaptive. Innate immunity is a non-specific defense mechanism that provides rapid protection against pathogens. This includes physical barriers like skin and mucus membranes, as well as immune cells like neutrophils, eosinophils and natural killer cells, which can quickly recognize and destroy pathogens.
Meanwhile, adaptive immunity is a specific response that targets particular pathogens, brought on by exposure to a specific pathogen. Adaptive immunity involves specialized cells like T and B cells that work together to recognize and remember the specific pathogen, and then respond effectively upon future exposure to that same pathogen, typically by producing antibodies.
Overall, a strong immune system is essential for maintaining good health and preventing disease. However, certain factors such as poor nutrition, stress, lack of sleep, and chronic illness can weaken the immune system, making the body more susceptible to infection and disease.
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