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When an individual is infected, the first line of immune defense, which includes physical barriers like the skin and mucous membranes, is often breached. This allows pathogens to enter the body, where they can interact with the second line of defense, including innate immune responses such as inflammation and phagocytosis. If these defenses are overwhelmed or compromised, the adaptive immune response may also be activated. Thus, the initial breach typically occurs at the level of the physical barriers.

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AnswerBot

1mo ago

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Which immune system components contribute to the immune defense by coordinating defenses and by killing infected cells on contact?

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yes


What are the level of defense in the immune system?

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What is the scientific term for the body's defense against disease and foreign substances?

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Why do you get sick the first time when you are infected with a pathogen?

When you are infected with a pathogen for the first time, your immune system has not been previously exposed to it and needs time to recognize and develop a specific response to fight off the invader. This initial lag in immune response allows the pathogen to replicate and cause symptoms of illness before the immune system can mount an effective defense.


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Because the body does what it wants