这个词是什么意思？
Insoluble polymers of TYROSINE derivatives found in and causing darkness in skin (SKIN PIGMENTATION), hair, and feathers providing protection against SUNBURN induced by SUNLIGHT. CAROTENES contribute yellow and red coloration.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008543 · MeSH 2026。
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