研究发现，射线薄壁细胞的细胞核比较丰富，尤其以横卧射线细胞最明显，多呈圆形或椭圆形。

Nuclei are proved to be existing in them. It is found that nuclei in ray parenchyma cells are more common, with round or elliptical shape, esp.

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轴向管胞之间、轴向管胞与射线薄壁细胞之间、轴向管胞与射线管胞之间，均有不同类型的纹孔对。

There are different types of pit-pair between the axial tracheids. the axial tracheid and the ray parenchyma, the axial tracheid and the ray tracheid.

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轴向管胞之间、轴向管胞与射线薄壁细胞之间、轴向管胞与射线管胞之间，均有不同类型的纹孔对。

There are different types of pit-pair between the axial tracheids. the axial tracheid and the ray parenchyma , the axial tracheid and the ray tracheid.

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