这个词是什么意思？
Generally refers to the digestive structures stretching from the MOUTH to ANUS, but does not include the accessory glandular organs (LIVER; BILIARY TRACT; PANCREAS).
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D041981 · MeSH 2026。
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