根的次生韧皮部则由筛胞和韧皮薄壁细胞组成。
The secondary phloem consisted of sieve cells and phloem parenchymas.
这些蛋白质积累在韧皮薄壁细胞和韧皮射线细胞的中央大液泡里。
They were accumulated in the large central vacuoles of secondary phloem parenchyma cells and secondary phloem ray cells.
筛分子（SE）与伴胞（CC）间、SE CC复合物之间、筛分子与韧皮薄壁细胞间缺少胞间连丝。
There was short of plasmodesma between SE and CC, between SE/CC complexes and between SEs and phloem parenchyma cells;
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