Complement 3b

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Complement 3b

(Science: chemical) The larger fragment formed when c3 convertase splits c3 into c3a and c3b. In both the classical and alternate pathway, c3b participates in immune adherence and enhances phagocytosis. It also forms a cellular intermediate which continues the complement process. In the alternate pathways, c3b initiates a positive Feedback activation of c3pase.

chemical name: complement C3b