This is a laboratory-based, exploratory study using tissue obtained from our clinical practice. The purpose of this study is to confirm our ability to characterize miR expression in various tissues (proximal and distal esophagus, stomach and duodenum) obtained from the upper gastrointestinal tract in preparation for the study of MiR in patients with Barrett's esophagus and other inflammatory conditions of the upper gastrointestinal tract.
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miR expression between tissue from Barrett's esophagus and that from normal tissues
Timeframe: time it takes to have standard of care biopsies taken during one routine Upper Endoscopy