Learning Path
Question & Answer
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Natural killer cells targeting infected cells
Inflammatory cytokines signaling a response
Antibodies neutralizing the virus
Memory cells activating an adaptive response
Understanding the Answer
Let's break down why this is correct
Inflammatory cytokines are chemical signals released by immune cells when they sense infection. Other options are incorrect because Natural killer cells attack infected cells, but they do not drive the body’s temperature rise; Antibodies are part of the later, adaptive immune response, which is activated after the innate alarm.
Key Concepts
Innate Immune Responses
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Deep Dive: Innate Immune Responses
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Definition
Innate immune responses involve natural killer cells targeting infections and tumors, inflammation causing hot, swollen areas to fight irritants, and fever as a systemic response to pathogens. Fever creates an inhospitable environment for pathogens to slow their growth. Asymptomatic infections, where pathogens multiply without causing symptoms, highlight the body's silent defense mechanisms.
Topic Definition
Innate immune responses involve natural killer cells targeting infections and tumors, inflammation causing hot, swollen areas to fight irritants, and fever as a systemic response to pathogens. Fever creates an inhospitable environment for pathogens to slow their growth. Asymptomatic infections, where pathogens multiply without causing symptoms, highlight the body's silent defense mechanisms.
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