比格犬神经垂体存在内分泌样细胞

Endocrine-Like Cells Occur in the Neurohypophysis of Beagle

透射电镜观察表明,比格犬(Beagle)神经垂体内除含大量的无髓神经纤维、神经纤维膨体(赫令小体)、神经胶质细胞和血窦外,还可分辨出少量的肥大细胞和内分泌样细胞.内分泌样细胞的主要特征是:胞质内含有大量高电子密度的小分泌颗粒,颗粒呈圆形,表面有膜包裹,直径约109～213nm,主要分布于一侧胞质内.

Under transmission electron microscope, it was observed that the neurohypophysis of the Beagle had a few mast cells and endocrine like cells besides a lot of non medullated fibers, Herring bodies, glial cells and sinusoids The endocrine like cells contained numerous secretory granules which were small, round, membrane bounded, highly electron dense, about 109～213 nm in diameter, and mainly occurred in one side of the cytoplasm