Wai Sen Mun, Yew David T
Department of Anatomy, The Chinese University of Hong Kong, Shatin, New Territories.
Cell Mol Neurobiol. 2002 Feb;22(1):57-85. doi: 10.1023/a:1015393729005.
The formation of visual cells and their intracellular organelles was studied in the embryonic chicken (Gallus domesticus) between stage 36 and hatching. Cilia formation was observed at stage 30 and by stage 42, outer segment formation from the cilia was evident. The inner segments appeared as buddings at stage 36. By stage 37, the buddings of double cones were observed clearly and such buddings elongated by stage 42. Both the single cones and rods appeared as buddings by stage 38 and elongation of the buddings was seen by stage 42. Oil droplets initially appeared by stage 39 in accessory cones and were observed in other cones by stage 42. Glycogen bodies were demonstrated firstly in rods and accessory cones at stage 43 and their development was completed by stage 45. In essence, all the essential elements of the visual cells were fully developed by hatching.
在第36阶段至孵化期间，对胚胎期鸡（家鸡）的视觉细胞及其细胞内细胞器的形成进行了研究。在第30阶段观察到纤毛形成，到第42阶段，纤毛形成外段明显可见。内段在第36阶段表现为芽状。到第37阶段，双锥的芽状结构清晰可见，到第42阶段这些芽状结构伸长。单锥和视杆在第38阶段均表现为芽状，到第42阶段芽状结构伸长。油滴最初在第39阶段出现在副锥中，到第42阶段在其他锥中也可观察到。糖原小体在第43阶段首先在视杆和副锥中被证实，到第45阶段其发育完成。本质上，视觉细胞的所有基本要素在孵化时已完全发育。
