这个词是什么意思？
An enzyme that catalyzes the transfer of a methyl group from S-adenosylmethionine to histamine, forming N-methylhistamine, the major metabolite of histamine in man. EC 2.1.1.8.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D006637 · MeSH 2026。
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