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. 2021 Jul 2;11:13723. doi: 10.1038/s41598-021-93222-8

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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OCT imaging of unprocessed excised Rattus mammary tumor tissue. (a) Shows a large field OCT image capturing the surface morphology of an entire excised tumor specimen. The inset in the lower right shows a camera image of the same section of tissues. (b) Vertical sections showing subsurface tissue morphology of the tissue captured in (a). Scale Bar: 1.25 mm. (c, d) Small field maximum projection images of different regions of excised Rattus mammary tissues captured using the OCT system. (c) Scale Bar: 100 µm. (d) Scale Bar: 100 µm. (e) Scale Bar: 100 µm.