这个词是什么意思？
Sugar-rich liquid produced in plant glands called nectaries. It is either produced in flowers or other plant structures (extrafloral nectaries), providing a source of attraction for pollinating insects and animals, as well as being a nutrient source to animal mutualists which provide protection of plants against herbivores.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D057048 · MeSH 2026。
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