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Entire digestive tract including mouth, esophagus, stomach and intestines.
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Entire digestive tract including mouth, esophagus, stomach, and intestines
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Entire digestive tract including mouth, oesophagus, stomach and intestines
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Esophagus, stomach, small intestine and large intestine together as a single entity.
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Esophagus, stomach, small intestine, and large intestine together as a single entity
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Oesophagus, stomach, small intestine and large intestine together as a single entity.
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