Köling A, Rask-Andersen H
Acta Odontol Scand. 1983 Dec;41(6):333-41. doi: 10.3109/00016358309162344.
The microvasculature of the subodontoblastic region in the human dental pulp was studied, using freeze-fracturing. This technique allows an analysis of the fine structure of the vascular endothelium with special reference to the membrane structure. The blood capillaries were noted to be of the non-fenestrated or continuous type, although a few fenestrated vessels were observed. The endothelial plasmalemma often exhibited bundles of fibrillar structures, presumably myofilaments. There was a relatively large number of micropinocytotic vesicles and the interendothelial spaces were closed juxtaluminally by tight junctions (zonulae occludentes). The junctions appeared mostly as two to four strands, seen as ridges or grooves on the cell membrane. Thin-walled, irregular, tissue channels lacking the typical, blood-vessel configuration were disclosed. These vessels were believed to represent lymphatics.
采用冷冻断裂技术对人类牙髓成牙本质细胞下层区域的微血管系统进行了研究。该技术能够特别针对膜结构分析血管内皮的精细结构。尽管观察到少数有窗孔的血管，但血毛细血管被认为是非窗孔型或连续型的。内皮细胞质膜常呈现出成束的纤维状结构，推测为肌丝。有相对大量的微吞饮小泡，并且内皮细胞间的间隙在管腔旁被紧密连接（闭锁小带）封闭。这些连接大多表现为两到四条链，在细胞膜上表现为嵴或沟。发现了薄壁、不规则且缺乏典型血管结构的组织通道。这些血管被认为代表淋巴管。
