It is more important that they like a barrier to prevent the transfer of conjunctival epithelium. These are very important to maintain normal physiology function and transparency of cornea.
角膜缘干细胞不仅可以分化、增殖为角膜上皮细胞，更重要的是干细胞像一道屏障，阻止结膜上皮细胞移行至角膜表面，这对于保持角膜的透明性与正常生理功能有着重要的意义。
参考来源 - 人角膜缘干细胞增殖、分化及标记物的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
眼表由角膜上皮、结膜上皮及表面的泪膜共同组成。
The ocular surface consists of the tear film, the epithelia of the cornea and conjunctiva.
结论：糖尿病患者泪膜稳定性下降，角、结膜上皮损害。
Conclusion: the stability of tear film decreases and the epithelia of cornea and conjunctiva destructs in diabetic patients.
目的：探索羊膜基底膜对结膜上皮细胞形态功能的影响。
Objective: To study the influence of amniotic membrane on the morphology and function of cultured human conjunctival epithelial cells.
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