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True or False: Activated neutrophils highly express properdin (factor P), which stabilizes C3 convertases.

True or False: Activated neutrophils highly express properdin (factor P), which stabilizes C3 convertases.

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True, Activated neutrophils are the major source of properdin, which acts to stabilize the alternative pathway C3 and C5 convertases by extending the half lives of C3 and C5 converting enzymes, and therefore enhances the activity of the alternative pathway.

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