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  • Cytology brushes designed to scrape and collect cells from the upper gastrointestinal tract, from the esophagus or, less frequently, from the stomach, through the working channel of a flexible gastroscope. These brushes usually consist of a cluster of bristles attached to a wire, possibly surrounded by a plastic sleeve, that runs back to a handle for external brush manipulation. The characteristics of endoscopic esophageal and/or gastric brushes, including diameter and length, should match one or more models of gastroscopes; these brushes may be intended for reuse or, more frequently, for single use.
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