PATHOLOGY MCQ
IMMUNE RESPONSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the rat has, or recently had, a viral infection.
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cancerous cells are present in the rat.
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the rat’s diet is deficient in calcium.
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monocytes are differentiating into macrophages in the rat’s bloodstream.
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Detailed explanation-1: -First discovered in 1957 by Issac and Lindeman, interferons are noted for their ability to interfere with viral replication. Interferons act via autocrine and paracrine pathways to induce an antiviral state in infected cells and in neighboring cells containing interferon receptors.
Detailed explanation-2: -White blood cells are part of the immune system. They help your body fight off infections and other diseases. When you get sick, your body makes more white blood cells to fight the bacteria, viruses, or other foreign substances causing your illness. This increases your white blood count.
Detailed explanation-3: -Interferons are a family of structurally related, species-specific proteins that enhance the immune system released by host cells in response to the presence of pathogens such as viruses, bacteria, parasites, and tumor cells.
Detailed explanation-4: -What role does interferon play in the immune response? It produces an antiviral substance. It stimulates NK cells to kill virus-infected cells.