鸡（原鸡）连合下器官顶端分泌的证据。
Evidence for apical secretion in the subcommissural organ of the chicken (Gallus gallus).
作者信息
Biosca A, Azcoitia I
机构信息
Universidad Complutense, Facultad de Biología, Departamento de Biología Celular, Madrid, Spain.
出版信息
J Hirnforsch. 1989;30(3):265-71.
The apical surface and apical cytoplasm of the ependymal cells of the subcommissural organ (SCO) of the chicken, Gallus gallus were investigated by scanning and transmission electron microscopy. The presence of "secretory elements" formed by dilated and irregularly shaped RER cisternae in the proximity of the apical plasma membrane and located into ventricular protusions of apical cytoplasm, evidence an ependymal secretion towards the cerebrospinal fluid (CSF), which is responsible of the Reissner's fibre (RF) by means of an apocrine mechanism. The observed ependymal lysosomal population has been related with an endocytotic mechanism from the ventricular CSF which could also suggest an absorptive role for the SCO.
利用扫描电子显微镜和透射电子显微镜对家鸡（Gallus gallus）室管膜下器官（SCO）室管膜细胞的顶面和顶质进行了研究。在顶质膜附近以及位于顶质的心室突起内，存在由扩张且形状不规则的粗面内质网池形成的“分泌元件”，这证明室管膜向脑脊液（CSF）分泌，通过顶浆分泌机制形成赖氏纤维（RF）。观察到的室管膜溶酶体群体与来自心室脑脊液的内吞机制有关，这也可能表明SCO具有吸收作用。
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