PATHOLOGY MCQ
IMMUNE RESPONSE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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antibodies
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breast milk
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B cells
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cytotoxic T cells
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Detailed explanation-1: -No. Cytotoxic T-cells play a role in cell-mediated immunity, a type of adaptive immunity. Innate immunity is the immunity already present in your body. You develop adaptive immunity when you’re exposed to infections or other foreign substances.
Detailed explanation-2: -TH2 cells initiate the humoral immune response by activating naive antigen-specific B cells to produce IgM antibodies. These TH2 cells can subsequently stimulate the production of different isotypes, including IgA and IgE, as well as neutralizing and/or weakly opsonizing subtypes of IgG.
Detailed explanation-3: -B-lymphocytes form army of proteins called antibodies in response to pathogen in blood and are stimulated by antigen and T-helper cells. Therefore, B-lymphocytes provide humoral mediated immunity. T-lymphocytes provide cell mediated immunity. So, the correct option is ‘B-lymphocytes’.
Detailed explanation-4: -Cell-mediated immunity, unlike humoral immunity, does not rely on antibodies to perform adaptive immunological activities. Mature T cells, macrophages, and the production of cytokines in response to an antigen are the main drivers of cell-mediated immunity.