这个词是什么意思？
Bluish-colored region in the superior angle of the FOURTH VENTRICLE floor, corresponding to melanin-like pigmented nerve cells which lie lateral to the PERIAQUEDUCTAL GRAY.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008125 · MeSH 2026。
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