基纹 basal striation

互联网2013-11-14

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指与上皮细胞的基部细胞膜平行的陷入部分，即伴随于基部套叠（ basal infolding），其细胞膜间的线粒体也与基膜呈垂直排列。在光学显微镜下观察，只这些平行排列的线粒体在核与基膜间呈梳子齿状结构，称此为基纹。多见于吸水旺盛的上皮。

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