这个词是什么意思？
A drug that is derived from opium, which contains from 0.3-1.5% thebaine depending on its origin. It produces strychnine-like convulsions rather than narcosis. It may be habit-forming and is a controlled substance (opiate) listed in the U.S. Code of Federal Regulations, Title 21 Part 1308.12 (1985). (From Merck Index, 11th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D013797 · MeSH 2026。
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