这个词是什么意思？
A class of immunoglobulin bearing mu chains (IMMUNOGLOBULIN MU-CHAINS). IgM can fix COMPLEMENT. The name comes from its high molecular weight and originally was called a macroglobulin.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D007075 · MeSH 2026。
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