NURSING EXAM QUESTIONS
PATHOLOGY AND GENETICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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T cells that secrete Il-2 and stimulate B-cells, other T-cells, and even macrophages are ____
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plasma cell
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cytotoxic T-cell
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helper T-cells
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the population has herd immunity to the disease
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attenuated
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Explanation:
Detailed explanation-1: -As IL-2 is mainly produced by activated T cells and, in particular, by activated CD4+ T-helper cells, at least part of their ‘helper’ function for CD8+ T cells was attributed to IL-2 (Keene & Forman, 1982).
Detailed explanation-2: -Helper T cells stimulate the B cell through the binding of CD40L on the T cell to CD40 on the B cell, through interaction of other TNF-TNF-receptor family ligand pairs, and by the directed release of cytokines.
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