Miriszlai E, Benedeczky I, Horváth K, Köllner P
ORL J Otorhinolaryngol Relat Spec. 1983;45(1):29-38. doi: 10.1159/000275623.
Ultrastructural studies of the round window membrane in infants revealed that the membrane is made up of three layers. The relatively wide outer epithelial layer consists of 3-4 cell layers and is formed by cuboidal and round cells. The outer two or three cell layers contain mainly rough endoplasmic reticulum and secretory granules, indicative of a secretory function of the epithelial cell layer of middle ear mucosa. Tonofilaments occur mainly in the more electron-dense epithelial cell layers which makes their mechanical role more probable. The connective tissue layer is relatively narrow and contains fibrocytes, much collagen and relatively few elastic fibres. The inner epithelial layer is built up of elongated cells containing rough endoplasmic reticulum cisternae in their cytoplasm.
对婴儿圆窗膜的超微结构研究表明，该膜由三层组成。相对较宽的外层上皮层由3 - 4层细胞组成，由立方体细胞和圆形细胞构成。外层的两三层细胞主要含有粗面内质网和分泌颗粒，表明中耳黏膜上皮细胞层具有分泌功能。张力丝主要出现在电子密度较高的上皮细胞层，这使其机械作用更有可能。结缔组织层相对较窄，含有纤维细胞、大量胶原蛋白和相对较少的弹性纤维。内层上皮层由细长细胞组成，其细胞质中含有粗面内质网池。
