Everts V, Beertsen W, van den Hooff A
Anat Rec. 1977 Sep;189(1):73-89. doi: 10.1002/ar.1091890106.
Nerve endings were observed between collagen fiber bundles in the alveolar compartment of the periodontal ligament. In close relation to these endings, cells were observed with a rounded cell body from which cytoplasmic extensions protruded, each forming part of a sheath around the terminal region of a small nerve fiber. The nuclei of these cells occupied an eccentric position in the cytoplasm and were characterized by a typical kidney shape. In the cell's center a prominent Golgi complex was present. In the peripheral cytoplasm ladder-like structures with a periodicity of 160 nm were occasionally observed. The cell bodies were surrounded by a basal lamina, while the cytoplasmic extensions investing the nerve endings were surrounded by an envelope consisting of alternating electron dense and electron translucent layers containing material that stained with PAS and Alcian Blue. Where these envelopes bordered on the connective tissue, areas of filamentous material with a periodicity of 100-150 nm were occasionally found. The end organs may be considered to form part of a receptor system.
在牙周膜牙槽部的胶原纤维束之间观察到神经末梢。与这些末梢紧密相关的是，观察到一些细胞，其细胞体呈圆形，从细胞体伸出细胞质突起，每个突起形成围绕小神经纤维终末区域的鞘的一部分。这些细胞的细胞核在细胞质中占据偏心位置，其特征为典型的肾形。在细胞中央有一个明显的高尔基体。在周边细胞质中偶尔观察到具有160nm周期性的梯状结构。细胞体被基膜包围，而包绕神经末梢的细胞质突起被一个包膜包围，该包膜由交替的电子致密层和电子透明层组成，其中含有用PAS和阿尔辛蓝染色的物质。在这些包膜与结缔组织接壤的地方，偶尔会发现具有100 - 150nm周期性的丝状物质区域。这些终末器官可被认为是受体系统的一部分。
