No abstract available
MeSH terms
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Aged
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Biopsy
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Carbon*
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Colon / pathology*
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Colonic Polyps / pathology
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Colonic Polyps / surgery
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Colonoscopy
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Coloring Agents / adverse effects*
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Humans
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Inflammatory Bowel Diseases / chemically induced*
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Inflammatory Bowel Diseases / pathology
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Male
Substances
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Coloring Agents
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chinese ink
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Carbon