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. 2020 Apr 28;11(5):2768–2778. doi: 10.1364/BOE.390782

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© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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Fig. 4. — Images of a biopsy from a human gastroesophageal junction. (A) A 200-frame averaged µOCT image of the biopsy showing columnar glandular architecture (arrow). (B) Color-coded d-µOCT image demonstrating glands containing cells with low frequency regions at their base (b), high-frequency modulation in the middle (m), and low frequency apically (a). (C) A comparison with the histology of the biopsy showing mucous cells. d-µOCT color codes: Red 0-0.08 Hz, Blue 0.55-0.78 Hz, Green 4.00-20.0 Hz. Bars = 100 µm.