这个词是什么意思？
A serum protein which is important in the ALTERNATIVE COMPLEMENT ACTIVATION PATHWAY. This enzyme cleaves the COMPLEMENT C3B-bound COMPLEMENT FACTOR B to form C3bBb which is ALTERNATIVE PATHWAY C3 CONVERTASE.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D011416 · MeSH 2026。
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