Albuminous cell 1.A vertically elongated parenchyma cell, found in groups in the rays of the secondary phloem in gymnosp蛋白质细胞：1.在裸子植物的次生韧皮部薄壁组织和韧皮射线中发现的1种垂直伸长的细胞，通常与筛胞相结合。