PATHOLOGY MCQ
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Activated B-cells divide to form memory cells.
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The receiver of the vaccine develops passive immunity.
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Helper T-cells produce specific antibodies.
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Macrophages are cloned and destroy the antigen.
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Detailed explanation-1: -Once the body produces antibodies in its primary response to an antigen, it also creates antibody-producing memory cells, which remain alive even after the pathogen is defeated by the antibodies.
Detailed explanation-2: -When a person gets a vaccine, the immune system responds to the antigen as if it were exposed to the actual germ (it makes antibodies and remembers how to defeat it). Then, if the body gets exposed to the actual germ, the immune system can recognize it right away and quickly fight it off to prevent disease.
Detailed explanation-3: -Once B-cells are activated, they become plasma cells that produce antibodies in response to an antigen. Or they become memory cells that remember the antigen so your immune system can quickly identify and fight it in the future.
Detailed explanation-4: -After immunization, dendritic cells take up microbial antigens and traffic to draining lymph nodes where they present processed antigens to naïve T cells. These naïve T cells are stimulated to proliferate and differentiate into effector and memory T cells.
Detailed explanation-5: -B cells secrete antibodies and mediate the humoral immune response, making them extremely important in protective immunity against SARS-CoV-2, which caused the coronavirus disease 2019 (COVID-19) pandemic.