【摘要】 本文用光镜、电镜和荧光方法,观察了13例胎儿肺内分泌细胞的形态和分布。该细胞多见于小支气管,呈圆形或卵圆形,附着于基底膜上。它们为嗜银染色阳性。胞浆内含神经分泌型颗粒,其直径为168～312nm。经含L-DOPA的Tyrode液温育,乙醛酸处理,细胞显绿色荧光。更多还原

【Abstract】 Endocrine cells have been observed from 13 cases of human fetal lungs through the using of Grimelius silver staining technique, fluorescence microscopy and ultrastructural examinations. They were found in great number in the small bronchi than in any other part of bronchial tree. Most of them were round or oval in shape, and usually rest on the basement membrane of epithelium. They were stained by Grimelius silver stain. After incubation with L-Dopa they emitted a green glyoxylic acid-induced fluorescence. Typical feature of these cells was the numerous electron dense neurosecretory-type granules, 168-312 nm in diameter, which can be seen throughout the cytoplasm.更多还原