Pawlicki R
Folia Histochem Cytobiol. 1984;22(2):91-7.
The fossil dinosaur bone material, 80 million years old was studied. Samples for analysis were prepared with specially elaborated methods. Images obtained in the light, transmission electron, and scanning electron microscopes revealed the spatial distribution of the osteocytes lying near and far from the vascular canal. Osteocytes of particular kind were found to be present in the immediate vicinity of the canal. The characteristic morphological structure and the localization of this osteocytes between the vascular canal and the osteocytes lying farther from the canal, as well as the mediation of this cell in the system of connections between those elements, served as a basis for the separation of this cells as the intermediary osteocyte. Among the osteocytes situated farther from the vascular canal, three kinds were distinguished: mono-, bi-, and multipolar, according to the kinds of processes and their distribution in relation to the mother cell body. By analogy with modern bone, in dinosaur bone specific functions may be ascribed to the distinguished types of osteocytes and to their differentiated processes in the conduction of nutrient and building elements and metabolites from the vascular canal to the intermediary osteocytes and, with their participation, to other osteocytes lying farther from the canal. This should naturally be analysed as the two-way tract.
对有着八千万年历史的恐龙化石骨骼材料进行了研究。采用特别精心设计的方法制备了用于分析的样本。通过光学显微镜、透射电子显微镜和扫描电子显微镜获得的图像揭示了靠近和远离血管通道的骨细胞的空间分布。发现特定类型的骨细胞存在于通道的紧邻区域。这种骨细胞在血管通道与远离通道的骨细胞之间的特征性形态结构、定位以及在这些元素之间的连接系统中的介导作用，成为将这种细胞分离为中间骨细胞的依据。在远离血管通道的骨细胞中，根据突起的类型及其相对于母细胞体的分布，区分出了三种类型：单极、双极和多极。与现代骨骼类似，在恐龙骨骼中，特定功能可能归因于已区分出的骨细胞类型及其在将营养物质、构建元素和代谢产物从血管通道传导至中间骨细胞，并在它们的参与下传导至远离通道的其他骨细胞过程中的分化突起。这自然应被分析为双向通道。
