| 单词 | Complement 3a |
| 释义 | Complement 3a《英文msh词典》Complement 3a [主题词] Complement 3a [入口词] C3 a [入口词] C3a [中文释义] 补体3a [英文释义] Smaller fragment formed when C3 convertase splits C3 into C3a and C3b. C3a is a 77-amino acid peptide that includes a carboxy-terminal arginine which is crucial for its biological activities. C3a causes symptoms of immediate hypersensitivity (anaphylaxis) including smooth muscle contraction,mast cell histamine release,and local inflammation. It is considered an anaphylatoxin along with C4a,C5a,and C5a des-arginine. |
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