这个词是什么意思？
A common name (but used formally) for a group of organisms that are mostly kinds of algae including BACILLARIOPHYTA; OOMYCETES; PHAEOPHYCEAE; and CHRYSOPHYCEAE. They all contain CHLOROPLASTS that are thought to have been derived from the endosymbiosis of ancient RED ALGAE.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D058009 · MeSH 2026。
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