Results: There was no melanin granule in basal cell layer in depigmented skin of 2 cases, which coincided in the pathogenic change of vitiligo.

结果：2例患者的皮肤色素脱失处基底层均未见黑素颗粒，符合白癜风的病理改变；

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The stem cells of the basal layer of the limbal epithelium have function of cell renewal and tissue regeneration, and ocular surface disorders result from lack of the stem cells.

角膜缘部上皮基底层的干细胞具有细胞更新和组织再生的功能，而眼部表面疾病则是干细胞缺乏的结果。

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