Biology, asked by aminajannata47, 4 days ago

why are c3a and c5a caled anaphylotoxins?

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Answered by Anonymous

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The C3a, C4a and C5a components are referred to as anaphylatoxins: they cause smooth muscle contraction, vasodilation, histamine release from mast cells, and enhanced vascular permeability. They also mediate chemotaxis, inflammation, and generation of cytotoxic oxygen radicals.

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