这个词是什么意思？
Specific, characterizable, poisonous chemicals, often PROTEINS, with specific biological properties, including immunogenicity, produced by microbes, higher plants (PLANTS, TOXIC), or ANIMALS.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D014118 · MeSH 2026。
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