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Brief Article
©2010 Baishideng.
World J Gastroenterol. Feb 28, 2010; 16(8): 987-991
Published online Feb 28, 2010. doi: 10.3748/wjg.v16.i8.987
Figure 1
Figure 1 Peristaltic contractions in the esophageal body were divided into three different segments (segments 1, 2, and 3, from oral to anal) by two troughs. UES: Upper esophageal sphincter; LES: Lower esophageal sphincter.


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