RID31054 internal surface of segment of duodenum
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RID31060 internal surface of anterior wall of segment of duodenum
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RID31061 internal surface of anterior wall of superior part of duodenum
RID31062 internal surface of anterior wall of descending part of duodenum
RID31063 internal surface of anterior wall of ascending part of duodenum
RID31064 internal surface of anterior wall of horizontal part of duodenum