The skin biopsy revealed that increased pigmentation of the basal layer and increase of melanocytes without incontinence of pigments.
组织病理学检查示基底层色素增加和黑素细胞增多，无色素失禁。
The skin biopsy revealed that increased pigmentation of the basal layer and increase of melanocytes without incontinence of pigments.
组织病理学检查示基底层色素增加和黑素细胞增多，无色素失禁。
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