胃可分为底部，体部和窦部。
免疫组化测定主动脉窦部MMP-2的表达；明胶酶谱法测定MMP-2的活性。
The expression and activation of matrix metalloproteinase-2 (MMP-2) were determined by the method of immunohistochemistry.
结果12例先天性幽门前瓣膜患儿中，超声能实时直观显示位于幽门窦部瓣膜样结构5例，其中合并幽门肌层肥厚性狭窄2例。
Results Of the 12 cases of congenital prepyloric diaphragm, valvula in pyloric antrum could be observed in 5 cases, inclusive of 2 cases of complicating pachyntic stenosis of pyloric muscular layer.
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