这个词是什么意思？
Any dummy medication or treatment. Although placebos originally were medicinal preparations having no specific pharmacological activity against a targeted condition, the concept has been extended to include treatments or procedures, especially those administered to control groups in clinical trials in order to provide baseline measurements for the experimental protocol.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D010919 · MeSH 2026。
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