这个词是什么意思？
A metabolite in the principal biochemical pathway of lysine. It antagonizes neuroexcitatory activity modulated by the glutamate receptor, N-METHYL-D-ASPARTATE; (NMDA).
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D015074 · MeSH 2026。
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