Biology · Human Health and Disease
Which of the following correctly represents the sequence of events in an allergic reaction?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Allergen → T-helper cell suppression → reduced immunity
- 2Allergen → IgA secretion → mucosal immunity
- 3Allergen → IgE production → mast cell activation → histamine release✓
- 4Allergen → IgG production → macrophage activation → phagocytosis
Correct answer
Allergen → IgE production → mast cell activation → histamine release
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