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Cytology brushes designed to scrape and collect cells from each of the three layers (i.e., basal, intermediate, and superficial) of the oral mucosa, usually in the space between the cheek and gum, along the roof of the mouth, and under the tongue. These brushes typically include a cluster of stiff plastic fibers at the distal tip attached to a handle for direct manipulation. Oral cytology brushes are also available in particular configurations (e.g., with two scraping surfaces, one flat at the working end of the brush and another circular at one border of the brush). These brushes are used to obtain samples intended to detect abnormalities in oral tissue (e.g., malignancies).
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