1·Compared with the thyroid gland of grey mullet, the endostyle of amphioxus is primitive. It is an open groove and has lots of cillia adjacent to the pharynx lumen.
与鲻鱼甲状腺相比，文昌鱼内柱的结构更为原始，仅是部分区带演变为甲状腺激素分泌细胞，而其余区带仍与摄食相关。
2·Phylogenetic analysis suggests the amphioxus actin genes have clearly undergone extensive expansion through tandem duplications.
进化分析的结果显示，文昌鱼的肌动蛋白基因家族可能通过串联重复而发生了扩增。
3·Amphioxus is becoming an emerging model organism for insights into the origin and evolution of vertebrates.
文昌鱼是研究脊椎动物起源与进化十分珍贵的模式动物。
4·And the primary research on cryopreservation of amphioxus embryos was also carried out.
此外还对文昌鱼胚胎的冷冻保存进行了初步探索。
5·Finally, the thesis also described a primary research on cryopreservation of amphioxus embryos.
本研究还对文昌鱼胚胎的冷冻保存进行了初步探索。