《英文msh词典》5,Complement
[入口词] 5,Complement
[主题词] Complement 5
[英文释义] The fifth component in the complement reaction sequence,probably exists in a complex with C6 and C7. It is a beta-globulin with a sedimentation coefficient of 10,serum concentration of 75 micrograms/ml and molecular weight of 180,000. It is activated by C423 and releases fragments with anaphylatoxic,chemotactic,and histamine-releasing actions and affecting smooth muscle.