条纹缘 striated border

互联网2013-11-15

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　　见于光学显微镜下的被覆上皮表面的薄层，即从侧面观察此薄层时，由于在与细胞表面成直角方向上可以看到无数的条纹，所以自古以来即有此名。这种条纹是并列的原生质突起，还是上皮细胞分泌的角质层中的细管，是有争论的，但通过电镜观察表明，此与刷状缘同样，也是一种微细绒毛。认为是具有吸收机能的细胞，具有扩大吸收面积的意义。

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