这个词是什么意思？
A complex sulfated polymer of galactose units, extracted from Gelidium cartilagineum, Gracilaria confervoides, and related red algae. It is used as a gel in the preparation of solid culture media for microorganisms, as a bulk laxative, in making emulsions, and as a supporting medium for immunodiffusion and immunoelectrophoresis.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D000362 · MeSH 2026。
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