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《Chinese Journal of Anatomy》 1987-04
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MORPHOLOGICAL OBSERVATION OF 5-HT IMMUNOREACTIVE ENDOCRINE CELLS IN GASTROINTESTINAL TRACT

Huang weiquan Si Yuchan Wang Wenchao(Department of Histology and Embryology, the FourthMilitary Medical college, Xian)  
Morphology of 5-HT immunoreactive endocrine cells in the gastrointestinal tract of guinea-pig and man were studied using the immunogold-silver staining on paraffin sections. The results are as follows: The processes of the basal portion of some endocrine cells extend to lamina propria through the basilar membrane and there are 5-HT positive substance around the end of the processes. The 5-HT positive substance of many endocrine cells can be found to extend to luminal surface of crypt or intestinal tract, occasionally the 5-HT positive substance is found extracellularly in the gland cavity. These results indicate that the 5-HT immunoreactive endocrine cells can release 5-HT by endocrine and exocrine ways.
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