トウホクサンショウウオ胚の繊毛

概要

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The embryos of some amphibians possess a ciliated ectoderm. The rotatory movement of embryos within the vitelline membrane mainly depends on the movement of its surface cilia. In Hynobius lichenatus, the rotation of the embryos began at the later stages of neurula. The speed of the rotation increased with the progress of development. Observations of dissociated ciliated cells from embryos proved that cilia, many in number, grew on one side of the cells. The cilia were seen to elongate with development. Electron microscopy of the gill region in middle tailbud stageembryos showed that each cilium posessed a 9+2 arrangement of longitudinal microtubules and was associated with a basal body. A poorly developed rootlet was ween running from the basal body downward into the cytoplasm. The ciliated cells were foud to be closely jointed with their neighboring cells by cell junctions, forming a so-called "junctional complex".
社団法人日本動物学会の論文
1976-03-25