OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC AND IMMUNE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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dendritic cells
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natural killer cells
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cytotic T-cells
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plasma B-cells
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Detailed explanation-1: -Killer T cells kill the body’s own cells that have been invaded by the viruses or bacteria. This prevents the germ from reproducing in the cell and then infecting other cells.
Detailed explanation-2: -Natural killer (NK) cells target and kill aberrant cells, such as virally infected and tumorigenic cells. Killing is mediated by cytotoxic molecules which are stored within secretory lysosomes, a specialized exocytic organelle found in NK cells.
Detailed explanation-3: -T-cells attack other cells in the body that have become cancerous or that were overtaken by viruses.
Detailed explanation-4: -NK cells are the body’s first line of defense against harmful cells, such as foreign, virus-infected, and cancer cells.
Detailed explanation-5: -Natural killer cells do not attack invading organisms directly but instead destroy the body’s own cells that have either become cancerous or been infected with a virus. NK cells were first recognized in 1975, when researchers observed cells in the blood…