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Under examples, C4a is listed as the least active, but C3a is listed as working with C5a. In this context "least active" is unclear as it implies C3a possesses intrinsic activity, even though the previous sentence says it works with another factor. While this may not have meaning in a normal/healthy pathway, the introduction of anti-C5 antibodies makes this an important distinction. — Preceding unsigned comment added by Millionmice (talk • contribs) 03:23, 24 October 2013 (UTC)