这个词是什么意思？
A bluish or purplish discoloration of the skin and mucous membranes due to an increase in the amount of deoxygenated hemoglobin in the blood or a structural defect in the hemoglobin molecule.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D003490 · MeSH 2026。
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