【植】 筛胞。
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In the axial systems, the phloem consists of sieve cells, phloem parenchyma cells, albuminous cell and phloem fibers. In the radial systems, it consists of phloem rays.
轴向系统由筛胞、韧皮薄壁组织细胞、蛋白细胞和韧皮纤维组成,径向系统由韧皮射线组成。
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Companion cells arrange in a row or single cell as long as the sieve tube member.
伴胞为与筛管分子等长的一列或单个细胞。