Hewing M
Anat Embryol (Berl). 1981;162(3):313-23. doi: 10.1007/BF00299975.
In the pineal system of the vole (Microtus agrestis) both the superficial and the deep pineal exhibit a high percentage of synaptic ribbons lying in intimate contact with the cell membrane of the pinealocytes. At the sites of contact, densities resembling the presynaptic dense projections of synapses are arranged between the ribbons and the cell membrane. Opposite the sites of contact various elements were found. The quantitative estimation revealed that in the superficial pineal about 40% and in the deep pineal about 60% of the membrane-contacting ribbons are located opposite glial cells: in both organ parts about 18% of the membrane-contacting ribbons were found opposite adjacent pinealocytes. The location of ribbons at the perivascular space was almost exclusively found in the superficial pineal, while the cerebrospinal fluid-contacting area in the deep pineal exhibited ribbons in intimate contact with the lumen of the third ventricle. The heterogeneity of the topographical relationships would seem to indicate a diffuse functional effect of the synaptic ribbons in the mammalian pineal gland.
在田鼠（Microtus agrestis）的松果体系统中，浅层和深层松果体均显示出高比例的突触带，这些突触带与松果体细胞的细胞膜紧密接触。在接触部位，类似突触前致密突起的密度物排列在突触带和细胞膜之间。在接触部位的对面发现了各种成分。定量估计显示，在浅层松果体中，约40%与神经胶质细胞相对的膜接触突触带位于深层松果体中，约60%：在两个器官部分中，约18%与相邻松果体细胞相对的膜接触突触带被发现。突触带在血管周围间隙的位置几乎仅见于浅层松果体，而深层松果体中与脑脊液接触的区域则显示出突触带与第三脑室腔紧密接触。地形关系的异质性似乎表明突触带在哺乳动物松果体中具有弥散性的功能作用。
