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The most beneficial effect of fever is that it (a) inhibits the spread of some bacteria and viruses, (b) increases the metabolic rate by up to 10 percent, (c) stimulates the release of pyrogens, (d) achieves a and b.
21. The Immune System
Introduction to Inflammation
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A scientist is analyzing the cells from a granuloma tissue sample. Which type of immune cell is the scientist least likely to find in this sample?
A
T cells.
B
Macrophages.
C
Neutrophils.
D
Giant cells.
Verified step by step guidance1
Understand the context of granuloma formation: Granulomas are organized collections of immune cells that form in response to chronic inflammation, often due to persistent infections or foreign substances.
Identify the common immune cells found in granulomas: Granulomas typically contain macrophages, which can fuse to form multinucleated giant cells, and T cells, which help regulate the immune response.
Consider the role of neutrophils: Neutrophils are primarily involved in acute inflammation and are the first responders to infection, but they are not typically present in granulomas, which are associated with chronic inflammation.
Analyze why neutrophils are least likely to be found: Since granulomas are formed during chronic inflammation, the presence of neutrophils, which are associated with acute inflammation, is minimal or absent.
Conclude that the scientist is least likely to find neutrophils in the granuloma tissue sample, as they are not characteristic of the chronic inflammatory response seen in granulomas.
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