扬子鳄消化道嗜银细胞的分布及形态学观察

该文用龙桂开浸银法对扬子鳄消化道嗜银细胞的分布及形态进行了观察。结果表明：嗜银细胞分布于整个消化道中，从食道到直肠。其中，十二指肠和回、直肠交接处密度很高，胃体及直肠很低。嗜银细胞形态多样。食道嗜银细胞位于上皮基部和固有膜中，呈椭圆形或不规则形。胃嗜银细胞位于胃腺部，圆形或椭圆形，有的可见明显的胞突。肠嗜银细胞位于上皮细胞之间，呈长柱形、纺锤形、长颈瓶形或锤状。多数细胞两端有较长胞突，分别与固有膜

DISTRIBUTION AND MORPHOLOGIC OBSERVATION OF ARGYROPHIL CELLS IN THE DIGESTIVE TRACT OF ALLIGATOR SINENSIS

Distribution and morphology of Argyrophil cells in the digestive tract of Alligator sinensis were investigated by means of Long's silver impregnation method.The result showed:Argyrophil cells distribute throughout the digestive tract,from esophagus to rectum.The density of Argyrophil cells in duodenum and the juncture between ileum and rectum is very high,in stomachus body and rectum very low.The argyrophil cells assume various forms.In the esophagus,they are oval or irregular in shape,lie in the base of epithelium and in the lamina propria.In the stomach,they are round or oval,scatter around the epithelial cells lining the stomachus gland.In the intestine,they are long columnar,spindle,flask shaped or hammer like,locate between the epithelial cells.Some of them have processes in both ends,which reach the lumen and laminal propria respectively.Secretory granules can also be seen at the top of some argyrophil cells.The characteristic of distribution and the relationship between morphology and function were discussed.