Most effective vaccines that are currently in widespread use are specific for viruses, and the immunity induced by the vaccine is mediated largely by antibodies. Which of the following statements accurately describes the major mechanism by which these vaccine-dependent antibody responses function?

Question

Accepted Answer

The antibodies bind extracellular virus particles to prevent them from infecting cells

Answer

The antibodies bind to extracellular viral particles and target Fc receptor–expressing cytolytic T cell to kill the viruses

Answer

The antibodies bind to viral antigens on the surface of infected cells and promote phagocytosis of the cells

Answer

The antibodies bind to viral antigens on the surface of infected cells and promote complement-mediated lysis of these cells

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Most effective vaccines that are currently in widespread use are specific for vi...

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