【摘要】 本文应用 Grimelius 法观察了中国林蛙消化道嗜银细胞的形态及分布密度．结果显示：嗜银细胞见于消化道全长,其各部密度分布大体呈一系列高低变动的“M”形曲线,有两个分布密度高峰,分别是胃体和回肠,其中胃体分布密度最高；而在食管,十二指肠和直肠分布密度较低,其中食管处分布密度最低．嗜银细胞主要呈锥体形和梭形,多位于上皮细胞之间,腺泡上皮之间或上皮细胞基部,还有的位于固有层中．根据其形态我们认为,中国林蛙消化道嗜银细胞具有内、外分泌两种功能．更多还原

【Abstract】 We use the silver nitrate method of Grimelius(Grimelius 1968)to study the distributed density and morphology of argentaffine cells in the digestive tract of Rana chensinensis.The results show that argentaffine cells could be observed throughout digestive tract,from esophagus to rectum and the distributed density curve appeared "M".There are two density peaks and they are body of stomach and ileum individually.The density of argentaffine cells is the highest in body of stomach,while the lowest in esophagus.The argentaffine cells are mainly tapering and shuttled in shape and argentaffine cells distribute widely between epithelial cells,between glandular epithelial cells,at bottom of epithelia or in the lamina propria.According to the morphology of ar- gentafine cells,we suggest that argentaffine ceils in the digestive tract of Rana chensinensis have both endo- crine and exocrine functions.更多还原