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Medical Definition of Complement 3b inactivators
1. Compounds which inhibit, antagonise, or inactivate complement 3b. A well-known inhibitor is a beta-globulin which cleaves c3b into inactive fragments c3c and c3d. C3bina plays a key role in the regulation of the complement system by blocking the cytolytic sequence and preventing recruitment of the properdin amplification loop. (12 Dec 1998)