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. 2021 Dec 17;9(12):23259671211062929. doi: 10.1177/23259671211062929

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© The Author(s) 2021

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 License (https://creativecommons.org/licenses/by-nc-nd/4.0/) which permits non-commercial use, reproduction and distribution of the work as published without adaptation or alteration, without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 7. — Immunohistochemical staining against (A) type 1 (TI) collagen and (B) type 3 (TIII) collagen for specimens from each group as well as normal contralateral, untreated tendon. Images show an increase in stain intensity for TI collagen and decreased stain intensity for TIII collagen with purified exosome product (PEP)–treated tendon, similar to the untreated normal tendon.