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Review Question - QID 210621

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QID 210621 (Type "210621" in App Search)
A 24-year-old woman presents to the emergency department because she started experiencing dyspnea and urticaria after dinner. Her symptoms began approximately 15 minutes after eating a new type of shellfish that she has never had before. On physical exam her breathing is labored, and pulmonary auscultation reveals wheezing bilaterally. Given this presentation, she is immediately started on intramuscular epinephrine for treatment of her symptoms. If part of this patient's symptoms were related to the systemic release of certain complement components, which of the following is another function of the responsible component?