这个词是什么意思？
A form species of spore-producing CYANOBACTERIA, in the family Nostocaceae, order Nostocales. It is an important source of fixed NITROGEN in nutrient-depleted soils. When wet, it appears as a jelly-like mass.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D050501 · MeSH 2026。
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