这个词是什么意思？
Organic nitrogenous bases. Many alkaloids of medical importance occur in the animal and vegetable kingdoms, and some have been synthesized. (Grant & Hackh's Chemical Dictionary, 5th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000470 · MeSH 2026。
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