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. 2018 Oct 1;27(11):1613–1622. doi: 10.1177/0963689718799040

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© The Author(s) 2018

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work 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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Fig. 2. — Gross morphological (A1–B3) findings of subscapularis tendons in groups 1, 2, and 3. (A1–A3) Pre-treatment images. FTT is observed in all three groups. (B1–B3) Post-treatment images. There were significant differences in gross morphological changes between before injection, and at 4 weeks after injection, in all three groups. G1-S, 0.2 mL (1 × 10⁶ cells) UCB-MSCs; G2-P1, 0.2 mL (1 × 10⁶ cells) UCB-MSCs with one injection of 0.2 mL PDRN; G3-P4, 0.2 mL (1 × 10⁶ cells) UCB-MSCs and four injections of 0.2 mL PDRN per week. PDRN: Polydeoxyribonucleotide acid; UCB-MSCs: human umbilical cord blood-derived mesenchymal stem cell; FTT: full thickness tear.