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A03 Digestive System D004064 +
A03.556 Gastrointestinal Tract D041981 +
A03.556.124 Intestines D007422 +
A03.556.124.684 Intestine, Small D007421 +
A03.556.124.684.124 Duodenum D004386 +
A03.556.124.684.124.322 Brunner Glands D002011
A03.556.124.684.124.236 Ampulla of Vater D014670 +
A03 Digestive System D004064 +
A03.556 Gastrointestinal Tract D041981 +
A03.556.875 Upper Gastrointestinal Tract D041742 +
A03.556.875.249 Duodenum D004386 +
A03.556.875.249.322 Brunner Glands D002011
A03.556.875.249.160 Ampulla of Vater D014670 +