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为了探讨内皮素在输卵管的分布，本研究以成年健康雌性新西兰种白兔为实验对象，去卵巢饲养４８天后，取输卵管做ＳＡＢＣ免疫组化，观察内皮素在无卵巢激素作用的输卵管中的分布。从实验结果观察到，在无卵巢激素作用下，输卵管粘膜上皮细胞矮小，排列不规则。在粘膜上皮细胞内，可见染成红色的内皮素颗粒；在固有层，未见红色颗粒；在肌层可见少量红色内皮素颗粒。上述结果表明，输卵管粘膜上皮细胞能合成内皮素。
In order to investigate the distribution of endothelin in the fallopian tube, this study, adult healthy female New Zealand white rabbits as experimental subjects, ovariectomized for 48 days, take the fallopian tubes do SABC immunohistochemistry to observe the endothelin in oviduct hormone-free oviduct distribution . Observed from the experimental results, in the absence of ovarian hormones, tubal mucosal epithelial cells short, irregular arrangement. In the mucosal epithelial cells, visible red stained endothelin particles; in the lamina propria, no red particles; in the muscular layer visible a small amount of red endothelin particles. The above results show that tubal epithelial cells can synthesize endothelin.