这个词是什么意思？
A peptidohydrolytic enzyme that is formed from PREKALLIKREIN by FACTOR XIIA. It activates FACTOR XII; FACTOR VII; and PLASMINOGEN. It is selective for both ARGININE and to a lesser extent LYSINE bonds. EC 3.4.21.34.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D020842 · MeSH 2026。
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