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← Human Body & HealthIf a researcher introduces a TNF-α inhibitor to counteract inflammation at a localized injury site, which consequence is most likely?
A)Enhanced neutrophil chemotaxis persists
B)Impaired pathogen clearance occurs locally✓
C)Increased prostaglandin synthesis continues
D)Elevated COX-2 expression predominates
💡 Explanation
TNF-α is a key cytokine that activates neutrophils for pathogen clearance; blocking it diminishes neutrophil activity locally because TNF-α stimulates their chemotaxis and phagocytosis. Therefore, pathogen clearance is impaired, rather than enhanced neutrophil chemotaxis continuing, or prostaglandin/COX-2 activity remaining unaffected.
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