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Questions and Answers
Which type of host defense is mediated by secreted antibodies?
Which type of host defense is mediated by secreted antibodies?
- Humoral immunity (correct)
- Innate immunity
- Cellular immunity
- Adaptive immunity
What is the function of antibodies in host defense?
What is the function of antibodies in host defense?
- To prevent infections by binding to and entering host cells
- To reach microbes that live inside cells
- To block microbes from binding to and entering host cells (correct)
- To eliminate microbes, toxins, and infected cells from the body
What is the role of antibodies in defense against microbes that live inside cells?
What is the role of antibodies in defense against microbes that live inside cells?
- To bind to these microbes after they enter host cells
- To prevent spread of infection from infected to uninfected cells (correct)
- To eliminate these microbes from the body
- To bind to these microbes before they enter host cells
Which cells synthesize and secrete antibodies of different heavy-chain isotypes?
Which cells synthesize and secrete antibodies of different heavy-chain isotypes?
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What is the function of antibodies' Fab regions?
What is the function of antibodies' Fab regions?
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What enhances the protective functions of antibodies?
What enhances the protective functions of antibodies?
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What is the role of the neonatal Fc receptor (FcRn)?
What is the role of the neonatal Fc receptor (FcRn)?
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Which receptor contributes to the long half-life of IgG molecules?
Which receptor contributes to the long half-life of IgG molecules?
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Which type of antibody has a half-life of about 3 weeks?
Which type of antibody has a half-life of about 3 weeks?
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What is the purpose of coupling proteins to an IgG Fc region?
What is the purpose of coupling proteins to an IgG Fc region?
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What is the function of the tumor necrosis factor (TNF) receptor–Fc fusion protein?
What is the function of the tumor necrosis factor (TNF) receptor–Fc fusion protein?
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