Detail of simple columnar epithelium with striated border (microvilli). Notice that the border is quite thin and the striations close together, looking like very regular, closely set brush bristles.

 
  • 单柱上皮表面纹状缘(微绒毛)。注意:纹状缘很薄、排列规则精密,状如鞋刷的毛簇.
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