Hoshino T
Acta Otolaryngol. 1982 May-Jun;93(5-6):349-54. doi: 10.3109/00016488209130892.
Vestibular portions of three foetal inner ears were examined by scanning electron microscope. The sensory cells from a 14-week foetus showed a coexistence of hair bundles of different lengths, indicating that the sensory cells were still in the developing stage. An 18-week foetus showed more developed hair bundles. A distinct kinocilium and unidirectional polarization of sensory cells were clearly seen even in the young short hair bundles. In all foetuses examined, non-sensory ciliated cells were found located on the vestibular wall between the utricular macula and all three cristae ampullares. These ciliated cells seem to disappear with maturation because these cells were not found in other postnatal inner ear specimens examined by the same method.
通过扫描电子显微镜对三个胎儿内耳的前庭部分进行了检查。来自14周胎儿的感觉细胞显示出不同长度的毛束共存，这表明感觉细胞仍处于发育阶段。18周的胎儿显示出更发达的毛束。即使在短的幼嫩毛束中也能清楚地看到明显的动纤毛和感觉细胞的单向极化。在所有检查的胎儿中，发现非感觉性纤毛细胞位于椭圆囊斑和所有三个壶腹嵴之间的前庭壁上。这些纤毛细胞似乎随着成熟而消失，因为在用相同方法检查的其他出生后内耳标本中未发现这些细胞。
