Yoshioka T, Inomata K, Tanaka O
Cell Tissue Res. 1985;241(2):415-20. doi: 10.1007/BF00217188.
The ependyma of the IVth ventricle and the central canal of the rat medulla oblongata was investigated using the cytochemical technique for alkaline phosphatase (A1Pase) which revealed two types of ependymal cells in the medulla. The central canal type of the ependymal cell occupying the dorsal part of the central canal in the lower medulla exhibited intense A1Pase activity with light microscopy. These cells had reaction products in all plasma membranes, including the microvilli and the cilia at the luminal cell surface. Some cells appeared to be tanycytes, since the process reached the basement membrane of the parenchymal blood vessel. The ventricular type of ependymal cells, which form the floor of the IVth ventricle and the central canal, contained no reaction products in any structure of the luminal cell surface. The possible relationship between the cerebrospinal fluid and the nervous tissues through the ependymal linings is discussed.
采用碱性磷酸酶（A1Pase）细胞化学技术对大鼠延髓第四脑室室管膜和中央管进行了研究，该技术揭示了延髓中两种类型的室管膜细胞。在光镜下，占据延髓下部中央管背侧部分的中央管型室管膜细胞表现出强烈的A1Pase活性。这些细胞在所有质膜中都有反应产物，包括腔面细胞表面的微绒毛和纤毛。一些细胞似乎是伸展细胞，因为其突起到达实质血管的基底膜。形成第四脑室底部和中央管的脑室型室管膜细胞，在腔面细胞表面的任何结构中都没有反应产物。本文讨论了脑脊液与神经组织通过室管膜内衬可能存在的关系。
