ray parenchyma

There pellet matter distributed in the secondary cortex of old roots, and in the ray parenchyma.

老根的次生皮层和射线薄壁细胞都分布有较多的颗粒物质。

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With the progressive development of stem, the activity of vascular cambium began. The fascicular cambium differentiated into secondary xylem and secondary phloem, while the interfascicular cambium only differentiated into wide ray of parenchyma tissue.

随着茎的继续发育，维管形成层开始活动，由束中形成层产生次生韧皮部和次生木质部分子；而束间形成层仅产生薄壁细胞组成宽的射线。

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