Biology · Immune System
How do vaccines work to protect the human body against specific infectious diseases?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1They act as broad-spectrum chemical agents to destroy all active pathogens in the body.
- 2They provide immediate passive immunity through direct injection of pre-formed antibodies.
- 3They stimulate the immune system to recognize and fight specific pathogens.✓
- 4They completely replace the natural function of the immune system.
Correct answer
They stimulate the immune system to recognize and fight specific pathogens.
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