PATHOLOGY MCQ
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a vaccine
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an allergen
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an antigen
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a macrophage
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Detailed explanation-1: -Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.
Detailed explanation-2: -Vaccines contain killed, weakened, or synthetically manufactured versions of the disease-causing germ or parts of the germ called antigens. Some newer vaccines (e.g., COVID-19 mRNA vaccines) contain instructions for producing antigens rather than the antigen itself.
Detailed explanation-3: -Live virus vaccines use the weakened (attenuated) form of the virus. The measles, mumps, and rubella (MMR) vaccine and the varicella (chickenpox) vaccine are examples. Killed (inactivated) vaccines are made from a protein or other small pieces taken from a virus or bacteria.