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. 2021 Sep 13;13(18):4593. doi: 10.3390/cancers13184593

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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White-light and narrow-band endoscopic imaging of esophageal cancer spectrum and dimensionality reduction data distribution map. (a) White-light endoscopic images of esophageal cancer spectrum; (b) white-light endoscopic images of esophageal cancer spectrum dimensionality reduction data in the first two principal components of the data distribution map; (c) narrow-band endoscopic imaging of esophageal cancer spectrum; (d) narrow-band endoscopic imaging of esophageal cancer spectrum dimensionality reduction data in the first two principal components of the data distribution map.