原胚初期胚体出现背腹极性，腹面的细胞小，细胞质稠密，液泡较少；
During early proembryo stage, the dorsiventrality appears in the proper of the embryo. On the ventral side, the cells are small with dense cytoplasm and few vacuoles.
首次观察到成熟腺毛头部为具有独特的内突生长的传递细胞，细胞为圆球形，细胞质稠密，细胞核大，内质网发达，液泡较小，细胞壁厚。
We first observed that the head ofmature tentacle contained transfer cells which were pellet shape, thickness cytoplast, large nucleolus, developing endoplasm, small vacuole and thick cell wall.
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